# Orphan Drug Credit: What It Is, How It Works

![Orphan Drug Credit](https://www.investopedia.com/thmb/GNWnSECLwNgL2RrMmfibjIeYNu4=/1500x0/filters:no_upscale():max_bytes(150000):strip_icc()/Orphan_Drug_Credit_Final-d4f3ae3de8c741988028a1aadde3c238.png)

*— Investopedia / Candra Huff*

## What Is the Orphan Drug Credit?

The orphan drug credit is a federal [tax credit](https://www.investopedia.com/terms/t/taxcredit.asp) that gives pharmaceutical companies incentives to develop medications and treatments for rare diseases that affect small populations. The credit is designed to help pharmaceutical companies lower their developmental costs.

The credit is for 25% of qualified clinical testing expenses. A rare disease is one that affects less than 200,000 people in the United States, or one that affects more than 200,000 people but for which there is no reasonable expectation that a treatment can be profitably developed.﻿﻿

### Key Takeaways

*   The Orphan Drug Act gives drug companies incentives to develop treatments for rare diseases, including a 25% tax credit on qualified clinical trials.
*   Other incentives include a rebate on application fees and a seven-year window of drug exclusivity.
*   The act was adopted in 1983 and has led to approvals for more than 780 products to treat more than 250 rare diseases.
*   About half of the approved treatments are in the field of oncology (the treatment of cancer).﻿﻿

## Understanding the Orphan Drug Credit

The orphan drug credit can be claimed whether the pharmaceutical company performs clinical tests itself or contracts out to a third party. In most cases, testing must take place in the U.S.﻿﻿ [Orphan drugs](https://www.investopedia.com/ask/answers/06/orphandrugstatus.asp) are drugs developed to treat so-called "orphan diseases," which is a term to describe extremely rare medical conditions such as Gaucher's disease, Tourette's syndrome, Huntington's disease, and many other disorders.﻿﻿

Despite being rare, orphan diseases affect a large number of people. An estimated 30 million people in the U.S. suffer from 7,000 rare diseases, yet 95% of these diseases have no treatment or cure.﻿﻿

The orphan drug tax credit is designed to encourage the development of treatments for these rare diseases. Without these tax credits, pharmaceutical companies would be forced to charge high prices that affected patients could never afford.

## History of the Orphan Drug Credit

In 1982, the U.S. [Food and Drug Administration](https://www.investopedia.com/terms/f/fda.asp) (FDA) recognized the lack of incentive for pharmaceutical companies to develop cures for rare diseases. From this realization, the Orphan Drug Act of 1983 was born.﻿﻿

Before the Orphan Drug Act was passed, pharmaceutical companies and medical researchers were unable and unwilling to invest in treatments for extremely rare diseases. There simply weren't enough patients for each orphan disease for pharmaceutical companies to recover their expenses, let alone make a profit. Clinical trials cost thousands of dollars per patient even when researchers can find enough patients to run trials.

Between 1983 and 2018, the orphan drug tax credit provided a 50% credit for qualified clinical testing costs for drugs tested under section 505(i) of the Federal Food, Drug, and Cosmetic Act.﻿﻿ A 2017 overhaul of the tax code under the Donald Trump administration reduced the credit from 50% to 25% beginning in 2018.﻿﻿ The National Organization for Rare Disorders and many other advocacy groups campaigned against the move.﻿﻿

> **Article Sources**
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> 1.  Cornell Law School, Legal Information Institute. "[26 U.S. Code Sec. 45C - Clinical Testing Expenses for Certain Drugs for Rare Diseases or Conditions](https://www.law.cornell.edu/uscode/text/26/45C)." Accessed Feb. 3, 2021.
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> 2.  U.S. Food and Drug Administration. "[Introduction to the Office of Orphan Products Development (OOPD)](https://www.fda.gov/media/128018/download)," Pages 10, 17, and 21. Accessed Feb. 3, 2021.
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> 3.  U.S. Food and Drug Administration. "[The Story Behind the Orphan Drug Act](https://www.fda.gov/industry/orphan-products-development-events/story-behind-orphan-drug-act)." Accessed Feb. 3, 2021.
>     
> 4.  National Organization for Rare Disorders. "[Impact of the Orphan Drug Tax Credit on Treatments for Rare Diseases](https://rarediseases.org/odtcwhitepaper/)." Accessed Feb. 3, 2021.
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> 5.  U.S. Food and Drug Administration. "[Orphan Drug Act - Relevant Excerpts](https://www.fda.gov/industry/designating-orphan-product-drugs-and-biological-products/orphan-drug-act-relevant-excerpts)." Accessed Feb. 3, 2021.
>     
> 6.  U.S. Congress. "[H.R. 1 - An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018](https://www.congress.gov/115/plaws/publ97/PLAW-115publ97.pdf)," Page 81. Accessed Feb. 3, 2021.
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> 7.  NORD Rare Action Network. "[Save the Orphan Drug Tax Credit!](https://rareaction.org/saveorphandrugs/)" Accessed Feb. 3, 2021.