# Government spending

Government spending, or government expenditure, includes all government consumption, investment, and transfer payments.[1][2] In national income accounting, government purchases of goods and services for immediate use—whether to satisfy individual or collective community needs—are classified as government final consumption expenditure. Meanwhile, spending on goods and services aimed at generating future benefits, such as infrastructure projects or research funding, is considered government investment (government gross capital formation). Together, these two forms of spending constitute a major component of gross domestic product (GDP).
Governments that issue their own sovereign currency are nominally self-financing.[3] However, under a full employment scenario, acquiring domestically produced resources without causing inflationary pressures requires offsetting measures such as taxation, government borrowing, custom duties, the sale or lease of natural resources, and various fees (e.g., national park entry fees or licensing fees).[4] When governments issue securities instead of permanently removing money from circulation, they pay interest on the borrowed funds.[5] Changes in government spending are a key fiscal policy tool used to stabilize the macroeconomic business cycle.
Public expenditure refers to government spending on collective or individual needs, such as pensions, healthcare, education subsidies, security, emergency services, and infrastructure.[6] Until the 19th century, public spending was minimal due to laissez-faire economic philosophies. However, in the 20th century, John Maynard Keynes argued that public expenditure plays a critical role in influencing income levels and economic distribution. Today, it remains a fundamental part of fiscal policy, ensuring the provision of public goods and essential services for households and businesses.

## Theories of public expenditure

Several theories of taxation exist in public economics. Governments can be separated into two distinct types when it comes to their fiscal and monetary sovereignty: currency-issuers and currency-users. Currency-users at all levels (national, regional and local) need to raise revenue from a variety of sources to finance public-sector expenditures. They are not in control of the currency that their jurisdiction transacts in and so are restricted by what revenue they can raise prior to executing spending policies. Currency-issuing governments have no such nominal fiscal restriction. They have an infinite fiscal capacity in that, in principle, they can issue as much of their own currency as they like. However, real resources and productive capacity within an economy are finite. It is the acquisition of these real resources for the public purpose and a non-inflationary bias in government policy-making that places the constraint on currency-issuing government spending, rather than nominal financing from prior revenue collection.
The details of taxation are guided by two principles: who will benefit, and who can pay. Public expenditure means the expenditure on the developmental and non-developmental activity such as construction of roadways and dams, and other activity.
Rules or principles that govern the expenditure policy of the government are called "canons of public expenditure". Economist George Findlay Shirras laid down the following four canons of public expenditure, although some are understood not to be required:
* Canon of benefit – public spending must be done in a manner that it brings greatest social benefits.
* Canon of economy – it says that economy does not mean miserliness. Public expenditure must be made productively and efficiently.
* Canon of sanction – public spending should not be made without sanction of an appropriate authority.
* Canon of surplus – public revenue should exceed government expenditure, this avoiding a deficit. Government must prepare a budget to create a surplus.
Three other canons are:
* Canon of elasticity – it says there should be enough scope in expenditure policy.government should be able to increase or decrease it according to the period.
* Canon of productivity – public expenditure should encourage production efficiency of the economy.
* Canon of equitable distribution – expenditure policy should minimize inequalities and it should be designed in a way to benefit poorer sections.

### Principle of maximum social advantage

The criteria and preconditions for achieving this balance are collectively known as the principle of maximum social advantage. Taxation (government revenue) and government expenditure are the two primary tools used to achieve this goal. Neither excessive taxation nor excessive government spending is beneficial to society; instead, a balance must be maintained to maximize social welfare. Hugh Dalton referred to this principle as "Maximum Social Advantage," while Arthur Pigou described it as "Maximum Aggregate Welfare."

### Dalton’s Principle of Maximum Social Advantage

Dalton argued that maximum social benefit is achieved when there is an optimal balance between public revenue and government expenditure. According to this principle, economic welfare is maximized when the marginal utility of public expenditure equals the marginal disutility of taxation. He explained this concept in terms of:
* Maximum Social Benefit (MSB)
* Maximum Social Sacrifice (MSS) [5]
The principle was further developed by Swedish economist Erik Lindahl in 1919.[6] According to Lindahl’s theory, the determination of public expenditure and taxation is based on public preferences, which individuals reveal through their willingness to pay. The cost of providing public goods is distributed among citizens according to their capacity to pay, ensuring an equitable system of taxation and expenditure.[7]
Government spending can be a useful economic policy tool for governments. Fiscal policy can be defined as the use of government spending and/or taxation as a mechanism to influence an economy. There are two types of fiscal policy: expansionary fiscal policy, and contractionary fiscal policy. Expansionary fiscal policy is an increase in government spending or a decrease in taxation, while contractionary fiscal policy is a decrease in government spending or an increase in taxes. Expansionary fiscal policy can be used by governments to stimulate the economy during a recession. For example, an increase in government spending directly increases demand for goods and services, which can help increase output and employment. On the other hand, contractionary fiscal policy can be used by governments to cool down the economy during an economic boom. A decrease in government spending or an increase in taxes can help reduce inflationary pressures within the economy. During economic downturns, in the short run, government spending can be changed either via automatic stabilization or discretionary stabilization. Automatic stabilization is when existing policies automatically change government spending or taxes in response to economic changes, without the additional passage of laws. A primary example of an automatic stabilizer is unemployment insurance or an employment guarantee, which provide financial assistance to unemployed workers or direct wages to recently unemployed workers, respectively. Discretionary stabilization is when a government takes actions to change government spending or taxes in direct response to changes in the economy. For instance, a government may decide to increase government spending as a result of a recession. With discretionary stabilization, most governments must pass a new law to make changes in government spending.
John Maynard Keynes was one of the first economists to advocate for government deficit spending as part of the fiscal policy response to an economic contraction. According to Keynesian economics, increased government spending raises aggregate demand and increases consumption, which leads to increased production and faster recovery from recessions. Classical economists, on the other hand, believe that increased government spending exacerbates an economic contraction by shifting resources from the private sector, which they consider productive, to the public sector, which they consider unproductive.
In economics, the potential "shifting" in resources from the private sector to the public sector as a result of an increase in government deficit spending is called crowding out. The figure to the right depicts an outdated theory for the market for capital, otherwise known as the market for loanable funds. The downward sloping demand curve D1 represents demand for private capital by firms and investors, and the upward sloping supply curve S1 represents savings by private individuals. The initial equilibrium in this market is represented by point A, where the equilibrium quantity of capital is K1 and the equilibrium interest rate is R1. In this theory, if the government increases deficit spending, it will borrow money from the private capital market and reduce the supply of savings to S2. The new equilibrium is at point B, where the interest rate has increased to R2 and the quantity of capital available to the private sector has decreased to K2. The government has essentially made borrowing more expensive and has taken away savings from the market, which "crowds out" some private investment. The crowding out of private investment could limit the economic growth from the initial increase in government spending.
A closer understanding of government fiscal operations contradicts the above loanable funds theory. In fact, in the first instance and all else equal, increased government deficit spending increases liquidity in the banking system, thereby pushing down on interest rates. Government borrowing is the act of swapping the excess bank reserves created via the increased deficit spending with Treasury securities, thus draining this excess liquidity back down to pre-spending levels. There is no "loanable funds" pool of currency in reality. Crowding out only refers to the shift of real resources from private to public use, not the crowding out of nominal private investment. Government deficit spending increases the net financial assets available to the non-government sector.

## Composition

Public expenditure can be divided into COFOG (classification of the functions of government) categories. Those categories are:
* Social protection
    pensions, subsidies for family and children, unemployment subsidies, R&D (Research and Development) on social protection.
* Health
    public health services, medical products, medical appliances and equipment, hospital services, R&D on healthcare.
* General Public Services
    executive and legislative organs, financial and fiscal affairs, external affairs, foreign economic aid, public debt transactions, R&D related to general public services
* Education
    pre-primary, primary, secondary, tertiary education, R&D on education etc. See also List of countries by spending on education as percentage of government spending.
* Economic Affairs
    general economic, agriculture, fuel and energy, commercial and labour affairs, forestry, fishing and hunting, mining, manufacturing, transport, communication etc.
* Public order and safety/emergency services
    police, fire-protection services, emergency medical services, law courts, prisons, etc.
* Defence
    Military defence, civil defence, foreign military aid.
* Recreation, culture and religion
    Recreational and sporting services, cultural services, broadcasting and publishing services, religious services etc.
* Environmental protection
    waste management, pollution abatement, protection of biodiversity and landscape etc.
* Housing and community services
    Housing development, community amenities, water supply, street lighting etc.

### Final consumption

Government spending on goods and services for current use to directly satisfy individual or collective needs of the members of the community is called government final consumption expenditure (GFCE) It is a purchase from the national accounts "use of income account" for goods and services directly satisfying of individual needs (individual consumption) or collective needs of members of the community (collective consumption). GFCE consists of the value of the goods and services produced by the government itself other than own-account capital formation and sales and of purchases by the government of goods and services produced by market producers that are supplied to households—without any transformation—as "social transfers" in kind.
Government spending or government expenditure can be divided into three primary groups, government consumption, transfer payments, and interest payments.
* Government consumption refers to government purchases of goods and services. Examples include road and infrastructure repairs, national defence, schools, healthcare, and government workers’ salaries.
* Investments in sciences and strategic technological innovations to serve the public needs.
* Transfer payments are government payments to individuals. Such payments are made without the exchange of good or services, for example old-age security payments, employment insurance benefits, veteran and civil service pensions, foreign aid, and social assistance payments. Subsidies to businesses are also included in this category.
* Interest payments are the interest paid to the holders of government bonds, such as saving bonds and treasury bills, including securities held by the government's central bank. The interest paid out to the central bank on these securities effectively is interest paid out on reserve balances deposited with the central bank.

### National defense spending

Stated reasons for defense spending include deterrence and active military operations. Factors of recent defense spending increases include Russian invasion of Ukraine and related deteriorating security situation. The countries with highest total military spending are USA and China, and the countries with highest military spending as percentage of GDP in 2023 among top 20 military spenders are Ukraine, Algeria, Saudi Arabia and Russia. Top 20 countries with the highest military spending 2023, where the values for China, Russia and Saudi Arabia are estimated:
| Rank | Country | Spending (US$ bn) | % of GDP | % of global spending |
| | World total | 2,443 | 2.3 | 100 |
| 01 | United States | 916.0 | 3.4 | 37 |
| 02 | China | 296.0 | 1.7 | 12 |
| 03 | Russia | 109.0 | 5.9 | 4.5 |
| 04 | India | 83.6 | 2.4 | 3.4 |
| 05 | Saudi Arabia | 75.8 | 7.1 | 3.1 |
| 06 | United Kingdom | 74.9 | 2.3 | 3.1 |
| 07 | Germany | 66.8 | 1.5 | 2.7 |
| 08 | Ukraine | 64.8 | 37.0 | 2.7 |
| 09 | France | 61.3 | 2.1 | 2.5 |
| 100 | Japan | 50.2 | 1.2 | 2.1 |
| 11 | South Korea | 47.9 | 2.8 | 2.0 |
| 12 | Italy | 35.5 | 1.6 | 1.5 |
| 13 | Australia | 32.3 | 1.9 | 1.3 |
| 14 | Poland | 31.6 | 3.8 | 1.3 |
| 15 | Israel | 27.5 | 5.3 | 1.1 |
| 16 | Canada | 27.2 | 1.3 | 1.1 |
| 17 | Spain | 23.7 | 1.5 | 1.0 |
| 18 | Brazil | 22.9 | 1.1 | 0.9 |
| 19 | Algeria | 18.3 | 8.2 | 0.7 |
| 20 | Netherlands | 16.6 | 1.5 | 0.7 |
Some sources say that Russian and Chinese military spending are actually far higher.

### Healthcare and medical research

Research Australia found 91% of Australians think 'improving hospitals and the health system' should be the Australian Government's first spending priority.
Crowding 'in' also happens in university life science research Subsidies, funding and government business or projects like this are often justified on the basis of their positive return on investment. Life science crowding in contrasts with crowding out in public funding of research more widely: "10% increase in government R&D funding reduced private R&D expenditure by 3%...In Australia, the average cost of public funds is estimated to be $1.20 and $1.30 for each dollar raised (Robson, 2005). The marginal cost is probably higher, but estimates differ widely depending on the tax that is increased".
In the US the total investment in medical and health research and development (R&D) in the US had grown by 27% over the five years from 2013 to 2017, and it is led by industry and the federal government. However, the industry accounted for 67% of total spending in 2017, followed by the federal government at 22%. According to the National Institute of Health (NIH) accounted for the lion's share of federal spending in medical and health research in 2017 was $32.4 billion or 82.1%.
Also, academic and research institutions, this includes colleges, and universities, independent research (IRIs), and independent hospital medical research centres also increased spending, dedicating more than $14.2 billion of their own funds (endowment, donations etc.) to medical and health R&D in 2017. Although other funding sources – foundations, state and local government, voluntary health associations and professional societies – accounted for 3.7% of total medical and health R&D expenditure.
On the other hand, global health spending continues to increase and rise rapidly – to US$7.8 trillion in 2017 or about 10% of GDP and $1.80 per capita – up from US£7.6 trillion in 2016. In addition, about 605 of this spending was public and 40% private, with donor funding representing less than 0.2% of the total although the health spending in real terms has risen by 3.79% in a year while global GDP had grown by 3.0%.
According to the World Health Organisation (WHO), the increase in health spending in low-income countries, and it rose by 7.8% a year between 2000 and 2017, while their economies grew by 6.4%, it is explained in the figure. However, the middle-income economies health spending grew more than 6%, and average annual growth in high-income countries was 3.5%, which is about twice as fast as economic growth. In contrast, health spending by the high-income countries continues to represent to be the largest share of global spending, which is about 81%, despite it covers only 16% of world's population; although it down from 87% in 2000. The primary drivers of this change in global spending on healthcare are India and China, which they moved to higher-income groups. Furthermore, just over 40% of the world population lived in low-income countries, which is now dropped to 10%. Moreover, significant spending increments were in upper-middle-income economies, where population share has more than doubled over the period, and share of global health spending nearly also doubled due to China and India's vast population joining that group. Unfortunately, all other spending share income groups had declined.
From the continent view, North America, Western Europe, and Oceanic countries have the highest levels of spending, and West Central Asia, and East Africa the lowest, which is closely followed by South Asia, it is explained in the figure.
It is also true that fast economic growth is associated with increased health spending and sustained rapid economic growth between 2000 and 2017. Even more, fast economic growth which is generally associated with the higher government revenues and health spending is mostly located in Asia such as China, India and Indonesia followed by the Middle East and Latin America. In these countries, the real health spending per capita grew by 2.2 times and increased by 0.6 percentage point as per a share of GDP from 2000 to 2017.

### Gross fixed capital formation

Government acquisition intended to create future benefits, such as infrastructure investment or research spending, is called gross fixed capital formation, or government investment, which usually is the largest part of the government. Acquisition of goods and services is made through production by the government (using the government's labour force, fixed assets and purchased goods and services for intermediate consumption) or through purchases of goods and services from market producers. In economic theory or in macroeconomics, investment is the amount purchased of goods which are not consumed but are to be used for future production (i.e. capital). Examples include railroad or factory construction.
Infrastructure spending is considered government investment because it will usually save money in the long run, and thereby reduce the net present value of government liabilities.
Spending on physical infrastructure in the U.S. returns an average of about $1.92 for each $1.00 spent on nonresidential construction because it is almost always less expensive to maintain than repair or replace once it has become unusable.
Likewise, government spending on social infrastructure, such as preventative health care, can save several hundreds of billions of dollars per year in the U.S., because for example cancer patients are more likely to be diagnosed at Stage I where curative treatment is typically a few outpatient visits, instead of at Stage III or later in an emergency room where treatment can involve years of hospitalization and is often terminal.

#### Energy infrastructure
### Science funding

Governments fund various research beyond healthcare and medical research (see above) and defense research (see above). Sometimes, relevant funding decision-making makes use of coordinative and prioritizing tools, data or methods, such as evaluated relevances to global issues or international goals (see also 2020#Global goals and issues) or national goals or major causes of human diseases and early deaths (health impacts).

### Travel

Although expenditure on ministerial, elected member and staff travel makes up only a small amount of central government expenditure, and the great majority of work trips by officials are undertaken at standard or economy class, the UK's National Audit Office has noted that this is an aspect of expenditure attracting high levels of public interest.

## Government spending by country
### Per capita spending

In 2010 national governments spent an average of $2,376 per person, while the average for the world's 20 largest economies (in terms of GDP) was $16,110 per person. Norway and Sweden expended the most at $40,908 and $26,760 per capita respectively. The federal government of the United States spent $11,041 per person. Other large economy country spending figures include South Korea ($4,557), Brazil ($2,813), Russia ($2,458), China ($1,010), and India ($226). The figures below of 42% of GDP spending and a GDP per capita of $54,629 for the U.S. indicate a total per person spending including national, state, and local governments was $22,726 in the U.S.

### Percentage of GDP

This is a list of countries by government spending as a percentage of gross domestic product (GDP) for the listed countries, according to the 2014 Index of Economic Freedom by The Heritage Foundation and The Wall Street Journal. Tax revenue is included for comparison. These statistics use the United Nations' System of National Accounts (SNA), which measures the government sector differently than the U.S. Bureau of Economic Analysis (BEA). The SNA counts as government spending the gross cost of public services such as state universities and public hospitals. For example, the SNA counts the entire cost of running the public-university system, not just what legislators appropriate to supplement students' tuition payments. Those adjustments push up the SNA's measure of spending by roughly 4 percent of GDP compared with the standard measure tallied by the BEA.
List of Countries as a % of GDP :
| Country | Tax burden % GDP | Govt. expend. % GDP |
| Afghanistan | 9 | 23 |
| Albania | 23 | 28 |
| Algeria | 10 | 40 |
| Angola | 6 | 39 |
| Argentina | 35 | 41 |
| Armenia | 17 | 25 |
| Australia | 26 | 35 |
| Austria | 42 | 51 |
| Azerbaijan | 13 | 34 |
| Bahamas | 16 | 23 |
| Bahrain | 3 | 31 |
| Bangladesh | 10 | 16 |
| Barbados | 27 | 41 |
| Belarus | 25 | 36 |
| Belgium | 44 | 53 |
| Belize | 23 | 29 |
| Benin | 16 | 22 |
| Bhutan | 14 | 38 |
| Bolivia | 22 | 35 |
| Bosnia and Herzegovina | 39 | 49 |
| Botswana | 28 | 32 |
| Brazil | 35 | 39 |
| Bulgaria | 26 | 34 |
| Burkina Faso | 14 | 24 |
| Burma | 4 | 19 |
| Burundi | 14 | 40 |
| Cambodia | 11 | 20 |
| Cameroon | 11 | 22 |
| Canada | 31 | 42 |
| Cape Verde | 20 | 32 |
| Central African Republic | 9 | 16 |
| Chad | 5 | 26 |
| Chile | 19 | 23 |
| China | 19 | 24 |
| Colombia | 15 | 29 |
| Comoros | 12 | 22 |
| Democratic Republic of the Congo | 24 | 29 |
| Congo | 8 | 26 |
| Costa Rica | 22 | 18 |
| Côte d'Ivoire | 13 | 26 |
| Croatia | 33 | 43 |
| Cuba | 24 | 67 |
| Cyprus | 27 | 46 |
| Czech Republic | 35 | 43 |
| Denmark | 48 | 58 |
| Djibouti | 20 | 35 |
| Dominica | 24 | 36 |
| Dominican Republic | 13 | 16 |
| Ecuador | 18 | 44 |
| Egypt | 14 | 32 |
| El Salvador | 15 | 22 |
| Equatorial Guinea | 2 | 35 |
| Eritrea | 50 | 34 |
| Estonia | 33 | 38 |
| Ethiopia | 11 | 18 |
| Fiji | 23 | 28 |
| Finland | 43 | 55 |
| France | 44 | 56 |
| Gabon | 10 | 25 |
| Gambia | 13 | 26 |
| Georgia | 25 | 32 |
| Germany | 37 | 45 |
| Ghana | 15 | 24 |
| Greece | 31 | 52 |
| Guatemala | 11 | 15 |
| Guinea | 16 | 22 |
| Guinea-Bissau | 9 | 21 |
| Guyana | 21 | 31 |
| Haiti | 13 | 34 |
| Honduras | 16 | 26 |
| Hong Kong | 14 | 19 |
| Hungary | 36 | 49 |
| Iceland | 36 | 47 |
| India | 19 | 29 |
| Indonesia | 12 | 19 |
| Iran | 9 | 22 |
| Iraq | 2 | 45 |
| Ireland | 28 | 48 |
| Israel | 33 | 45 |
| Italy | 43 | 50 |
| Jamaica | 23 | 32 |
| Japan | 28 | 42 |
| Jordan | 14 | 33 |
| Kazakhstan | 15 | 22 |
| Kenya | 20 | 29 |
| Kiribati | 20 | 92 |
| North Korea | N/A | N/A |
| South Korea | 26 | 30 |
| Kuwait | 1 | 39 |
| Kyrgyzstan | 19 | 36 |
| Laos | 14 | 21 |
| Latvia | 27 | 39 |
| Lebanon | 17 | 30 |
| Lesotho | 38 | 63 |
| Liberia | 20 | 31 |
| Libya | 1 | 67 |
| Liechtenstein | N/A | N/A |
| Lithuania | 16 | 38 |
| Luxembourg | 37 | 42 |
| Macau | 35 | 17 |
| Madagascar | 11 | 16 |
| Malawi | 20 | 35 |
| Malaysia | 15 | 29 |
| Maldives | 16 | 43 |
| Mali | 14 | 25 |
| Malta | 34 | 42 |
| Mauritania | 18 | 28 |
| Mauritius | 18 | 25 |
| Mexico | 11 | 27 |
| Federated States of Micronesia | 12 | 65 |
| Republic of Moldova | 31 | 39 |
| Mongolia | 33 | 45 |
| Montenegro | 24 | 44 |
| Morocco | 23 | 35 |
| Mozambique | 20 | 34 |
| Namibia | 28 | 37 |
| Nepal | 13 | 19 |
| Netherlands | 39 | 50 |
| New Zealand | 32 | 48 |
| Nicaragua | 18 | 26 |
| Niger | 14 | 20 |
| Nigeria | 5 | 29 |
| North Macedonia | 26 | 31 |
| Norway | 43 | 44 |
| Oman | 2 | 38 |
| Pakistan | 9 | 20 |
| Panama | 18 | 27 |
| Papua New Guinea | 26 | 29 |
| Paraguay | 13 | 19 |
| Peru | 17 | 19 |
| Philippines | 12 | 16 |
| Poland | 32 | 44 |
| Portugal | 31 | 49 |
| Qatar | 3 | 31 |
| Romania | 28 | 37 |
| Russia | 30 | 36 |
| Rwanda | 13 | 27 |
| Saint Lucia | 25 | 35 |
| Saint Vincent and the Grenadines | 22 | 30 |
| Samoa | 23 | 44 |
| Sao Tome and Principe | 17 | 49 |
| Saudi Arabia | 4 | 35 |
| Senegal | 19 | 29 |
| Serbia | 35 | 45 |
| Seychelles | 32 | 36 |
| Sierra Leone | 12 | 22 |
| Singapore | 14 | 17 |
| Slovakia | 29 | 38 |
| Slovenia | 37 | 51 |
| Solomon Islands | 37 | 51 |
| South Africa | 27 | 32 |
| Spain | 32 | 45 |
| Sri Lanka | 12 | 21 |
| Sudan | 7 | 18 |
| Suriname | 19 | 27 |
| Swaziland | 23 | 31 |
| Sweden | 45 | 51 |
| Switzerland | 29 | 34 |
| Syria | 10 | N/A |
| Taiwan | 9 | 23 |
| Tajikistan | 20 | 27 |
| Tanzania | 15 | 27 |
| Thailand | 16 | 23 |
| East Timor | 61.5 | 51.2 |
| Togo | 17 | 24 |
| Tonga | 18 | 29 |
| Trinidad and Tobago | 17 | 35 |
| Tunisia | 21 | 35 |
| Turkey | 25 | 35 |
| Turkmenistan | 18 | 15 |
| Uganda | 17 | 21 |
| Ukraine | 38 | 46 |
| United Arab Emirates | 6 | 24 |
| United Kingdom | 36 | 49 |
| United States | 25.1 | 41.6 |
| Uruguay | 27 | 33 |
| Uzbekistan | 20 | 31 |
| Vanuatu | 16 | 25 |
| Venezuela | 13 | 40 |
| Vietnam | 21 | 31 |
| Yemen | 5 | 29 |
| Zambia | 19 | 24 |
| Zimbabwe | 30 | 35 |
| Somalia | N/A | N/A |
| Brunei | 24 | 34 |

### Public social spending

Public social spending comprises cash benefits, direct in-kind provision of goods and services, and tax breaks with social purposes provided by general government (that is central, state, and local governments, including social security funds).
2015 Public social spending :
| Country | Public social spending % of GDP |
| France | 31.7 |
| Finland | 30.6 |
| Belgium | 29.2 |
| Italy | 28.9 |
| Denmark | 28.8 |
| Austria | 28.0 |
| Sweden | 26.7 |
| Greece | 26.4 |
| Spain | 25.4 |
| Germany | 25.0 |
| Portugal | 24.1 |
| Norway | 23.9 |
| Slovenia | 22.4 |
| Netherlands | 22.3 |
| Luxembourg | 22.2 |
| United Kingdom | 21.5 |
| OECD | 21.0 |
| Hungary | 20.7 |
| New Zealand | 19.7 |
| Switzerland | 19.6 |
| Czech Republic | 19.5 |
| Poland | 19.4 |
| Slovakia | 19.4 |
| United States | 19.0 |
| Australia | 18.8 |
| Canada | 17.2 |
| Estonia | 17.0 |
| Ireland | 17.0 |
| Israel | 16.0 |
| Iceland | 15.7 |
| Latvia | 14.4 |
| Chile | 11.2 |
| Korea | 10.1 |

### European Union

Public expenditures represented 46.7 percent of total GDP of the European Union in 2018. Countries with the highest percentage of public expenditure were France and Finland with 56 and 53 percent, respectively. The lowest percentage had Ireland with only 25 percent of its GDP. Among the countries of the European Union, the most important function in public expenditure is social protection. Almost 20 percent of GDP of European Union went to social protection in 2018. The highest ratio had Finland and France, both around 24 percent of their GDPs. The country with least social protection expenditure as percent of its GDP was Ireland with 9 percent. The second largest function in public expenditure is expenditure on health. The general government expenditure on health in European Union was over 7 percent of GDP in 2018. The country with highest share of health expenditure in 2018 Denmark with 8.4 percent. The least percentage had Cyprus with 2.7 percent. General public services had 6 percent of total GDP of European Union in 2018, Education around 4.6 percent and all other categories had less than 4.5 percent of the GDP.

## Research, assessments and transparency

There is research into government spending such as their efficacies or effective design or comparisons to other options as well as research containing conclusions of public spending-related recommendations. Examples of such are studies outlining benefits of participation in bioeconomy innovation or identifying potential "misallocations" or "misalignments". Often, such spending may be broad – indirect in terms of national interests – such as with human resources/education-related spending or establishments of novel reward systems. In some cases, various goals and expenditures are made public to various degrees, referred to "budget transparency" or "government spending transparency".

### Informed and optimized allocations

A study suggests "Greater attention to the development of methods and evidence to better inform the allocation of public sector spending between departments" may be needed and that decisions about public spending may miss opportunities to improve social welfare from existing budgets.

### Underlying drivers of spending alterations

A study investigated funding allocations for public investment in energy research, development and demonstration reported insights about past impacts of its drivers, that may be relevant to adjusting (or facilitating) "investment in clean energy" (see below) "to come close to achieving meaningful global decarbonization". The investigated drivers can be broadly described as crisis responses, cooperations and competitions.

## Principles and ethics

Studies and organizations have called for systematically applying principles to spending decisions or to take current issues and goals such as climate change mitigation into account in all such decisions. For example, scientists have suggested in Nature that governments should withstand various pressures and influences and "only support agriculture and food systems that deliver on the SDGs (in line with "public funds for public goods")".
Similarly in regard to openness, a campaign by the Free Software Foundation Europe (FSFE) has called for a principle of "Public Money, Public Code" – that software created using taxpayers' money is developed as free and open source software, and Plan S calls for a requirement for scientific publications that result from research funded by public grants being published as open access.
Public sector ethics may also concern government spending, affecting the shares and intentions of government spending or their respective rationales (beyond ethical principles or implications of the contextual socioeconomic structures), as well as corruption or diversion of public funds.
In 2012, following a United States presidential Campaign to Cut Waste, the Office of Management and Budget issued a memorandum to the heads of federal departments and agencies calling for the avoidance of wasteful expenditure, identifying "practical steps" and setting specific targets for reduction of expenditure on travel, conference attendance and expense, real property and fleet management.

## History
### Before World War I

At the end of the 19th century average public expenditure was around 10 percent of GDP. In US it was only 7 percent and in countries like United Kingdom, Germany or Netherlands it did not exceed amount of 10 percent. Australia, Italy, Switzerland and France had public expenditure over 12 percent of GDP. It was considered as a significant involvement of government in economy. This average share of public expenditure increased to almost 12 percent before the start of World War I. Due to the World War I anticipation, the share increased quickly in Austria, France, United Kingdom or Germany.

### Effect of World War I and interwar period

The World War I caused a global growth of the public expenditure share in GDP. In United Kingdom, Germany, Italy and France, which were affected a lot by the war, the share of public expenditure even exceeded 25 percent. In interwar period the average share of the public expenditure was still slightly increasing. The United States increased its public expenditure with the New Deal. Other governments also increased public expenditure to create more employment. The increase was accelerated by World War II anticipation in the second part of the 30s among European countries. In 1937 the amount of average public expenditure share was between 22 and 23 percent, twice as much as before World War I. However, it is fair to mention that part of this increase of public expenditure share was caused by GDP fall. Most of industrialized countries had its GDP over 15 percent before the World War II. Only Australia, Norway and Spain had less than 15 percent of GDP.

### World War II and post-war period

From the start of the World War I until 1960 the average share of public expenditure in GDP increased slowly from 22 to 28 percent. Most of this increase was given by growth of military spending caused by World War II. Spain, Switzerland and Japan had their public expenditure still below 20 percent of their GDPs.

### Second half of the 20th century.

The average public expenditure, as a share of GDP, increased rapidly between years 1960 and 1980 from around 28 to 43 percent. No industrial country had this share below 30 percent in 1980. In Belgium, Sweden and Netherlands it was even over 50 percent. In last two decades of 20th century share of public expenditure kept increasing, but the growth significantly slowed down. In 1996 the average public expenditure was around 45 percent, which is in comparison with 1960–1980 period slow increase from year 1980. During 1980–1996 period the public expenditure share even declined in many countries, for example United Kingdom, Belgium, Netherlands etc.

### Growth of public expenditure

There are several factors that have led to an enormous increase in public expenditure through the years
1) Defense expenditure due to modernization of defense equipment by the navy, army and air force to prepare the country for war or for prevention causes-for-growth-of-public-expenditure.
2) Population growth – It increases with the increase in population, more of investment is required to be done by government on law and order, education, infrastructure, etc. investment in different fields depending on the different age group is required.
3) Welfare activities – social welfare, pensions, etc.
* Provision of public and utility services – provision of basic public goods given by government (their maintenance and installation) such as transportation.
* Accelerating economic growth – to raise the standard of living of the people.
* Price rise – higher price level compels the government to spend an increased amount on purchase of goods and services.
* Increase in public revenue – with the rise in public revenue government is bound to increase the public expenditure.
* International obligation – maintenance of socio-economic obligation, cultural exchange etc. (these are indirect expenses of government)
4) Wars and social crises – fighting among people and communities, and prolonged drought or unemployment, earthquake, hurricanes or tornadoes may lead to an increase in public expenditure of a country. This is because it will involve governments to re-plan and allocate resources to finance the reconstruction.
5) Creation of super national organizations – E.g., the United Nations, NATO, European community and other multinational organizations that are responsible for the provision of public goods and services on an international basis, have to be financed out of funds subscribed by member states, thereby adding to their public expenditure.
6) Foreign aid – Acceptance by the richer industrialized countries of their responsibility to help the poor developing countries has channeled some of the increased public expenditure of the donor country into foreign aid programmes.
7) Inflation – This is the general rise in the price level of goods and services. It increases the cost of all activities of the public sector and thus a major factor in growth in money terms of public expenditure

### Present

Since the late 1980s, the average public expenditure to GDP ratio is increasing slowly. The only industrialized countries that reduced significantly are New Zealand, Ireland and Norway. One of the reasons is growing skepticism about governmental intervention in the economy.

## Future trends in public spending

Looking at how the world panorama has been developing in the last years and bearing in mind various factors such as economic conditions, government priorities, demographic changes, and technological advancements, these are some key trends that will probably shape public spending in the near future:

### Healthcare and aging population

As life expectancy increases all over the world, governments are expected to spend more on healthcare and pensions for elderly people. Aging populations will continue to pressure health and long-term care spending as well as pension spending while the working-age population able to finance such expenditures is decreasing, raising concerns over the system's ability to provide these public goods/services without imposing a heavy financial burden on the working-age population. The nature of technological advancements and their implementation can either increase or decrease expenditure pressures.

### Digital transformation

As digital technology becomes integral to all aspects of life, governments may invest more in cybersecurity, digital services for citizens, and smart city technologies. According to a UN’ study, achieving an inclusive digital transformation is expected to cost $5.6 trillion annually from 2023 to 2030 for the 48 developing economies studied, equal to 18% of their combined GDP. This means the cost of universal digital connectivity and internet use, widespread access to banking and financing services is $1231 per capita.

### Sustainability and climate change

As global warming becomes a critical issue, climate change mitigation and adaptation are becoming urgent. Public spending is expected to rise in areas like sustainable urban development, renewable energy sources, and climate resilience projects. Russia's invasion of Ukraine and the consequently geo-political instability have been leading many countries to reduce their reliance on fossil fuels. The high level of government spending on clean energy is motivating "substantial flows of private investment", said the IEA (International Energy Agency). The IEA projects an increase in the overall level of global clean energy investment by 50% to more than $2 trillion per year in 2030.

### Defense and security

Geopolitical tensions and national security concerns can also direct public spending toward defense and security. This includes not only military spending but also cybersecurity and border security. World military expenditure reached an all-time high of $2443 billion in 2023. For the first time since 2009, military spending increased across all five continents identified by SIPRI (Stockholm International Peace Research Institute), with significant rises observed in Europe, Asia, Oceania, and the Middle East. According to Statista, in the US, the country that spends more on Defense and Security, spending in Defense is predicted to increase every year until 2034.

### Debt management

With the rise in government spending due to various crises and long-term investments, managing public debt will become a critical issue. Fiscal policies may need to balance between stimulating growth and maintaining financial stability. According to the IMF (International Monetary Fund), without any additional reforms, government spending in emerging market economies can rise by between 3 and 6 percentage points of GDP until 2050. In developed economies, where there is a greater need for consolidation and limited scope for generating extra revenue through taxes, spending reductions might be required as a component of a broader reform plan. In contrast, in many emerging markets and low-income economies, a substantial portion of the population does not have access to comprehensive public services like education and healthcare. Here, there is potential to enhance the availability of public goods and services through increased taxation. However, some reallocation of spending will also likely be necessary.

#### Government Spending Review

A recent instrument used to decrease the public debts in OECD countries and increase its efficiency is the Spending Reviews. These are tools that work as a collaborative effort to develop and implement policy choices by examining the government's current expenditures within specific areas. These can have different objectives depending on the ultimate goal that governments are trying to achieve. The main aim of the Spending Reviews is to examine the value of the public money being spent, i.e., if the spending is leading to the expected outcome. SpR takes part in the budget process. After the global financial crisis, the use of spending reviews has risen significantly among OECD countries.
Source: OECD (2020), Spending Review Survey
Political commitment and ownership are essential for the success of spending reviews. They ensure cross-government cooperation throughout the process and facilitate decisions on the goals, scope, and implementation of the recommended actions.

### Education and workforce training

The rapid pace of technological change necessitates continual skill upgrades. Governments might increase investment in education, particularly in STEM fields (Science, Technology, Engineering, and Mathematics) and vocational training, to prepare the workforce for future job markets. Education is more and more seen rather as an investment than an expenditure. Each additional year of schooling typically increases a person's yearly income by about 10%, surpassing the financial returns from investing in the stock market. Moreover, education promotes social inclusion with research indicating that investing in girl's education gives particularly significant returns. Universal education levels the playing field by ensuring that all individuals have access to it and have the same starting-point public educational opportunities. Finally, education has a crucial role in fostering productivity. So, improving its access and quality becomes essential as countries face productivity slowdowns.

### Public spending and SDGs

Public Spending is increasingly important to determine the future of the world. Its extremely large footprint makes it a powerful force for countries to achieve certain goals and standards, such as the Sustainable Development Goals (SDGs). These 17 global goals, set by the General Assembly of the United Nations, cover social and economic development matters and are in the 2030 UN Agenda. Its main objective is to aim for sustainable economic growth, social inclusion, and environmental protection all over the world. Through their targets and indicators, these goals set a critical guide for how governments can spend money and formulate policies to approach areas where they can really make a big positive impact.