Business tax credits cut a company’s federal tax bill dollar-for-dollar, which makes them more valuable than deductions of the same size. A $10,000 deduction lowers your taxable income by $10,000; a $10,000 credit erases $10,000 straight off what you owe. Most federal credits available to companies flow through a single framework called the General Business Credit, which caps how much you can claim in a year and lets you carry the rest backward or forward.
Credits Versus Deductions, Refundable Versus Not
After you calculate the tax you owe, eligible credits come off that number.1Internal Revenue Service. Credits and Deductions for Businesses Two distinctions decide how much cash a credit actually puts in your pocket.
The first is refundability. Most general business credits are non-refundable: they can drive your tax bill to zero, but the IRS won’t cut you a check for anything past that. A few credits, like the fuel tax credit, are refundable, and the excess comes back as a payment even if you owed nothing.
The second is timing. A startup piling up R&D credits while running losses can’t use those credits right away. They queue up and wait for taxable income to arrive, which is why the carryback and carryforward rules matter as much as the credit rates themselves.
The General Business Credit Cap
Internal Revenue Code Section 38 combines dozens of separate credits into one number on your return.2Office of the Law Revision Counsel. 26 U.S. Code 38 – General Business Credit You calculate each credit on its own form, then flow them all into Form 3800, where the annual limitation is applied.
The cap works like this. Your total General Business Credit for the year cannot exceed your net income tax minus the greater of two figures: your tentative minimum tax, or 25 percent of your net regular tax liability above $25,000.2Office of the Law Revision Counsel. 26 U.S. Code 38 – General Business Credit The government won’t let credits wipe out your entire tax obligation. A floor always remains.
Anything over the cap doesn’t vanish. It gets carried back a year and then forward for up to 20 years, under the rules below. Within Form 3800, credits are used first-in, first-out: oldest carryforwards first, then this year’s credits, then any carrybacks.3Internal Revenue Service. Instructions for Form 3800 and Schedule A
The Credits Worth Evaluating
The specific credits Congress offers shift over time, but a handful cover the situations most companies encounter.
Research and Development Credit
The R&D credit under Section 41 is the most widely claimed general business credit. It covers expenses for developing new or improved products, processes, or software. To qualify, the work must be technological, involve genuine experimentation, and aim to resolve uncertainty about capability, method, or design. Qualifying costs include wages for research staff, supplies consumed in testing, and part of what you pay outside contractors.
A significant change took effect for tax years beginning after December 31, 2024: domestic research and experimental costs can once again be deducted immediately, rather than capitalized and amortized over five years as the prior rule required.4Internal Revenue Service. Rev. Proc. 2025-28 Research done outside the United States must still be amortized over 15 years.
One trap: Section 280C requires you to reduce your research expense deduction by the amount of the credit.5Office of the Law Revision Counsel. 26 U.S. Code 280C – Certain Expenses for Which Credits Are Allowable Alternatively, you can elect a reduced credit and keep the full deduction. That election is irrevocable for the year, so run the numbers both ways before you file.
Small companies with gross receipts under $5 million and no more than five years of gross receipts history get another route: apply up to $500,000 of the R&D credit against payroll taxes rather than income taxes.6Internal Revenue Service. Research Credit Against Payroll Tax for Small Businesses For early-stage businesses with little income tax liability, that turns an otherwise frozen credit into savings on every payroll run. The election is made on Form 6765 and reported on Form 8974.
Work Opportunity Tax Credit
The Work Opportunity Tax Credit rewarded hiring from groups facing employment barriers, including veterans, long-term public assistance recipients, and formerly incarcerated individuals. At its standard rate, it equaled 40 percent of up to $6,000 in first-year wages for employees working at least 400 hours, producing a maximum of $2,400 per hire. Certain veteran categories allowed up to $24,000 in qualifying wages, for a maximum of $9,600.7Internal Revenue Service. Work Opportunity Tax Credit
The most recent authorization expired at the end of 2025. Congress has renewed the credit multiple times, so employers who hire from these populations should watch for extending legislation. Credits already earned on pre-expiration hires remain valid and can still be carried forward.
Clean Energy Credits
The Inflation Reduction Act created or expanded a set of energy-related credits that carry the largest dollar values available to many businesses. The Clean Electricity Investment Credit gives a base rate of 6 percent of qualified investment in eligible facilities placed in service after December 31, 2024. That rate jumps to 30 percent when the project meets prevailing wage and registered apprenticeship requirements, with additional bonuses of up to 10 percentage points each for domestic content and for locating in an energy community.8Internal Revenue Service. Clean Electricity Investment Credit You cannot claim both the investment credit and the production credit on the same facility.
Other energy credits cover carbon oxide sequestration, clean hydrogen production, advanced manufacturing, clean fuel production, and alternative fuel vehicle refueling property. Many of these qualify for transfer and direct-pay mechanisms, which is the point covered below.
Disabled Access Credit
Small businesses that spend to comply with the Americans with Disabilities Act can claim a credit of 50 percent of eligible expenses between $250 and $10,250, for a maximum of $5,000 per year.9Office of the Law Revision Counsel. 26 U.S. Code 44 – Expenditures to Provide Access to Disabled Persons To qualify, the business must have had gross receipts under $1 million or no more than 30 full-time employees in the prior year. Eligible costs include removing physical barriers, buying adaptive equipment, and providing interpreters or other accommodations.
Employer-Provided Childcare Credit
Businesses that operate or contract with a qualified childcare facility for employees can claim 40 percent of qualified childcare costs, capped at $500,000 per year. Eligible small businesses get better terms: 50 percent of costs and a $600,000 cap.10Office of the Law Revision Counsel. 26 U.S. Code 45F – Employer-Provided Child Care Credit An additional 10 percent credit applies to resource and referral spending. For tax years beginning after 2026, both caps adjust for inflation.
Small Employer Health Insurance Credit
Section 45R provides a credit of up to 50 percent of premiums paid by small employers, or 35 percent for tax-exempt organizations.11Office of the Law Revision Counsel. 26 USC 45R – Employee Health Insurance Expenses of Small Employers Eligibility requires fewer than 25 full-time equivalent employees, average annual wages below a set threshold, and employer contribution of at least 50 percent of premium costs through a plan offered on the SHOP marketplace.
Two catches. The credit is available for only two consecutive tax years.12Internal Revenue Service. Instructions for Form 8941 And SHOP marketplace availability is thin in some areas, which can put the credit out of practical reach.
Selling or Cashing In Clean Energy Credits
Before the Inflation Reduction Act, a company that earned a credit but didn’t owe enough tax to use it had one option: wait, and carry it forward until income caught up. Two mechanisms changed that for clean energy credits.
Under Section 6417, certain entities can elect to receive their clean energy credits as a direct cash payment from the IRS instead of using them to offset tax. This applies mainly to organizations that don’t pay federal income tax anyway: tax-exempt nonprofits, state and local governments, tribal governments, and rural electric cooperatives.13eCFR. Elective Payment Election of Applicable Credits A limited number of credits, including those for carbon oxide sequestration, clean hydrogen, and advanced manufacturing, also let taxable businesses elect direct payment.
Section 6418 creates a separate option: an eligible taxpayer can sell all or part of a qualifying clean energy credit to an unrelated buyer for cash.14Office of the Law Revision Counsel. 26 U.S. Code 6418 – Transfer of Certain Credits The buyer uses the credit against its own tax; the sale proceeds are tax-free to the seller and non-deductible to the buyer. The election is irrevocable, the parties cannot be related, and the buyer cannot re-transfer what it bought.
These transfer rules apply only to specific clean energy credits listed in the statute. They do not extend to the R&D credit, the disabled access credit, or other general business credits. Companies planning large energy projects should evaluate the transfer market early, because finding a buyer and structuring the deal takes time.
Credits Through Partnerships and S Corporations
Partnerships and S corporations don’t pay federal income tax themselves. They pass credits through to partners and shareholders on Schedule K-1, and the owners claim them on their own returns. Tax credits in a partnership are allocated based on each partner’s interest at the time the credit arises.15eCFR. 26 CFR 1.704-1 – Partners Distributive Share When a partnership expenditure creates both a credit and a deductible loss, the credit follows the loss allocation. Partners then run those credits through their own Form 3800, subject to their individual limitation.
A partnership generating substantial credits whose partners have modest tax bills can end up with most of the credit value stuck in carryforwards. For clean energy credits eligible under Section 6418, selling to a third party with real tax liability often produces a better result than passing them to partners who can’t absorb them.
Carrybacks and Carryforwards
When your General Business Credit exceeds the Section 38 cap, the unused portion carries back one year and forward 20 years.16Office of the Law Revision Counsel. 26 USC 39 – Carryback and Carryforward of Unused Credits The carryback lets you amend the prior year’s return and recover taxes already paid, which can produce a quick cash refund. Anything still unused after the carryback moves forward against future liability.
Credits are used in the order earned, oldest first.16Office of the Law Revision Counsel. 26 USC 39 – Carryback and Carryforward of Unused Credits The oldest carryforwards, closest to expiring, get applied before newer ones.
A detail that surprises many filers: unlike net operating losses, the General Business Credit does not allow you to waive the carryback and go straight to a carryforward.17Internal Revenue Service. 21.5.9 Carrybacks If you have unused credits and prior-year tax liability that can absorb them, the carryback applies whether or not you want it to.
Recapture and Penalties
Claiming credits you don’t qualify for has real consequences. If the IRS finds that a disallowed credit resulted from negligence or a substantial understatement, the accuracy-related penalty is 20 percent of the underpayment.18Internal Revenue Service. Accuracy-Related Penalty That 20 percent stacks on top of repaying the credit itself plus interest.
Recapture is a separate risk. Certain credits must be repaid, in whole or in part, if the underlying asset or activity changes before a required holding period ends. For investment-related credits, disposing of an asset or shifting it from business to personal use within five years of placing it in service triggers recapture, with the amount tied to how early in that window the change happens. For low-income housing credits, recapture applies if a building’s qualified basis drops from one year to the next, or if the owner disposes of the property without following the procedures that prevent recapture.19Internal Revenue Service. About Form 8611 – Recapture of Low-Income Housing Credit
Treat credit-eligible assets and activities as commitments with tails. Selling a building early or shutting down a research program can pull back years of tax benefit in a single return.
Forms and Records
Each credit has its own form. The R&D credit uses Form 6765.20Internal Revenue Service. Instructions for Form 6765 – Credit for Increasing Research Activities The Work Opportunity Tax Credit used Form 5884, with a prerequisite: employers had to submit Form 8850 to their state workforce agency within 28 days of a new hire’s start date before claiming the credit.21Internal Revenue Service. Employers Should Certify Employees Before Claiming the Work Opportunity Tax Credit The small employer health insurance credit uses Form 8941. All of them feed into Form 3800 for the combined limitation.
Documentation is where most claims fall apart during audits. For the R&D credit, examiners look for contemporaneous technical records: the uncertainty the work was trying to resolve, the experiments run, and the expenses tied to each project. Assembling those records years later is far weaker than logs created during the research. For hiring credits, payroll records showing hours and wages are essential. For energy credits, keep certifications, placed-in-service dates, and evidence of meeting prevailing wage and apprenticeship requirements.
Corporations file on Form 1120 with credit schedules attached.22Internal Revenue Service. Instructions for Form 1120 Partnerships file Form 1065 and pass credit information to partners on Schedule K-1. Keep supporting records for at least three years after the filing date to cover the standard statute of limitations.23Internal Revenue Service. How Long Should I Keep Records For credits with carryforwards, hold onto records until three years after the carryforward is fully used or expires, whichever is later.