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Forecast of Future Revenue


The Congressional Budget Office publishes regular forecasts of future federal government revenue.

CBO: Long-term Outlook for Federal Revenue

Federal revenue will increase from 16.5 percent to 19 percent of GDP in the early 2040s.

CBO Estimate - Federal Revenue

Chart 3.61: CBO Estimate - Federal Revenue

The Congressional Budget Office Long-term Budget Outlook released in September 2020 projects the trends in federal revenue out to 2050.

According to the CBO federal revenue will increase in the next 30 years from 16 percent of GDP in FY 2020 to nearly 19 percent of GDP at the end of the 2040s.


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Revenue Data Sources

Revenue data is from official government sources.

Gross Domestic Product data comes from US Bureau of Economic Analysis and measuringworth.com.

Detailed table of revenue data sources here.

Federal revenue data begins in 1792.

State and local revenue data begins in 1820.

State and local revenue data for individual states begins in 1957.

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Data Sources for 2026:

GDP, GO: GDP, GO Sources
Federal: Fed. Budget: Hist. Tables 2.1, 2.4, 2.5, 7.1
State and Local: State and Local Gov. Finances
'Guesstimated' by projecting the latest change in reported revenue forward to future years

> data sources for other years
> data update schedule.

Blog

CBO Long Term Budget Outlook for 2025

On March 27, 2025 the Congressional Budget Office released its annual Long Term Budget Outlook for 2025, which projects federal spending and revenue out to 2055.  As before, the data for the CBO study shows that federal health-care programs and interest costs will eat the budget, with federal spending exceeding 25 percent GDP by the 2040s while federal revenue stays a little over 19 percent GDP.

UsGovernmentspending.com has updated its chart of the CBO Long Term Budget Outlook here.  You can download the data and also view CBO Long Term Budget Outlooks going back to 1999.

State FY25 Taxes Update
On November 22, 2025 usgovernmentspending.com updated FY2025 state revenue with quarterly tax data released by the US Ce ...

Gross State Product for 2024
The US Bureau of Economic Analysis (BEA) released its Gross State Product (GSP) data for 2024 on March 29, 2025.Usgovernmen ...

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