A material for molding, comprising: carbon fiber bundles to be easily impregnated, including carbon fibers and at least one impregnation aid in an amount of 3 to 15 parts by mass based on 100 parts by mass of the carbon fibers, the at least one impregnation aid satisfying the following requirements 1 and 2; and a polybutylene terephthalate in an amount of 66 to 2000 parts by mass based on 100 parts by mass of the carbon fibers, the polybutylene terephthalate adhered to the carbon fiber bundle to be easily impregnated: Requirement 1: liquid at 280°C has a viscosity of 10 Pa·s or less; Requirement 2: a reduction ratio in glass transition temperature (ΔTg) of larger than 0.2 (°C/%), the reduction ratio in glass transition temperature (ΔTg) being defined by the following expression including a glass transition temperature Tg 1 (°C) of a resin composition obtained by incorporating the impregnation aid in an amount of 1 part by mass to 100 parts by mass based on 100 parts by mass of the polybutylene terephthalate, a glass transition temperature Tg 0 (°C) of the polybutylene terephthalate, and a content (%) of the impregnation aid: Reduction ratio in glass transition temperature ΔTg °C / % = ( Tg 0 °C − Tg 1 °C / content of impregnation aid % wherein the content of impregnation aid (%) is defined by the following expression: Content of impregnation aid % = 100 × amount of impregnation aid parts by mass / amount of the polybutylene terephthalate parts by mass the viscosity of the liquid of the impregnation aid is measured by using a parallel-plate viscometer equipped with a high-temperature chamber under the conditions of a strain rate of 1 /s and a temperature of 280°C, the glass transition temperature of the polybutylene terephthalate and of the resin composition obtained by incorporating the impregnation aid in the polybutylene terephthalate is measured by using a differential scanning calorimeter under the conditions of a temperature rising rate of 20 °C/min, wherein the impregnation aid is one or more selected from the group consisting of a phosphoric acid ester and an aliphatic hydroxycarboxylic acid-based polyester, wherein the phosphoric acid ester is an aromatic phosphoric acid ester having a boiling point under normal pressure of 340°C or higher and a heating loss at 280°C under a nitrogen atmosphere of 2 %/minute or less. carbon fiber bundles to be easily impregnated, including carbon fibers and at least one impregnation aid in an amount of 3 to 15 parts by mass based on 100 parts by mass of the carbon fibers, the at least one impregnation aid satisfying the following requirements 1 and 2; and a polybutylene terephthalate in an amount of 66 to 2000 parts by mass based on 100 parts by mass of the carbon fibers, the polybutylene terephthalate adhered to the carbon fiber bundle to be easily impregnated: Requirement 1: liquid at 280°C has a viscosity of 10 Pa·s or less; Requirement 2: a reduction ratio in glass transition temperature (ΔTg) of larger than 0.2 (°C/%), the reduction ratio in glass transition temperature (ΔTg) being defined by the following expression including a glass transition temperature Tg 1 (°C) of a resin composition obtained by incorporating the impregnation aid in an amount of 1 part by mass to 100 parts by mass based on 100 parts by mass of the polybutylene terephthalate, a glass transition temperature Tg 0 (°C) of the polybutylene terephthalate, and a content (%) of the impregnation aid: Reduction ratio in glass transition temperature ΔTg °C / % = ( Tg 0 °C − Tg 1 °C / content of impregnation aid % Requirement 1: liquid at 280°C has a viscosity of 10 Pa·s or less; Requirement 2: a reduction ratio in glass transition temperature (ΔTg) of larger than 0.2 (°C/%), the reduction ratio in glass transition temperature (ΔTg) being defined by the following expression including a glass transition temperature Tg 1 (°C) of a resin composition obtained by incorporating the impregnation aid in an amount of 1 part by mass to 100 parts by mass based on 100 parts by mass of the polybutylene terephthalate, a glass transition temperature Tg 0 (°C) of the polybutylene terephthalate, and a content (%) of the impregnation aid: Reduction ratio in glass transition temperature ΔTg °C / % = ( Tg 0 °C − Tg 1 °C / content of impregnation aid % wherein the content of impregnation aid (%) is defined by the following expression: Content of impregnation aid % = 100 × amount of impregnation aid parts by mass / amount of the polybutylene terephthalate parts by mass the viscosity of the liquid of the impregnation aid is measured by using a parallel-plate viscometer equipped with a high-temperature chamber under the conditions of a strain rate of 1 /s and a temperature of 280°C, the glass transition temperature of the polybutylene terephthalate and of the resin composition obtained by incorporating the impregnation aid in the polybutylene terephthalate is measured by using a differential scanning calorimeter under the conditions of a temperature rising rate of 20 °C/min, wherein the impregnation aid is one or more selected from the group consisting of a phosphoric acid ester and an aliphatic hydroxycarboxylic acid-based polyester, wherein the phosphoric acid ester is an aromatic phosphoric acid ester having a boiling point under normal pressure of 340°C or higher and a heating loss at 280°C under a nitrogen atmosphere of 2 %/minute or less.