# R&D Tax Credit Calculator (2026 Tax Year)

Most startups work out the federal R&D tax credit with the alternative simplified credit: 14% of this year's qualified research expenses above half their average over the previous three years, or 6% of this year's if any of those years had none. A qualified small business can apply up to $500,000 of it a year against payroll taxes, so a startup without a profit still gets the money. The calculator at https://www.finta.com/tools/rd-tax-credit-calculator works out the credit, the payroll part and the Form 6765 lines.

Inputs it needs:

- 2026 W-2 wages of the people building the product, and the qualified share of those wages. Count each person's qualified R&D time of 80% or more as 100%, multiply their wages by that adjusted share, add those amounts, and divide by total wages. This is wage-weighted, not a team time average.
- 2026 spending on US contractors for R&D (65% counts) and on cloud and supplies used to develop and test
- Whether the company had qualified research expenses in each of 2023, 2024 and 2025, and their total if so
- 2026 gross receipts, and the first year the company had any (interest counts)

## How the R&D tax credit is calculated

Sources: 26 U.S.C. § 41 (https://www.law.cornell.edu/uscode/text/26/41), § 280C(c) (https://www.law.cornell.edu/uscode/text/26/280C), § 174A (https://www.law.cornell.edu/uscode/text/26/174A), Treas. Reg. § 1.41-2 (https://www.law.cornell.edu/cfr/text/26/1.41-2), and the IRS payroll tax credit page (https://www.irs.gov/businesses/small-businesses-self-employed/qualified-small-business-payroll-tax-credit-for-increasing-research-activities).

### What counts as a qualified research expense

- Wages: W-2 pay for people doing, directly supervising or directly supporting the research, in proportion to their time.
- Contractors: 65% of what you pay US contractors for the research.
- Supplies and cloud: materials used up in the research, and cloud computing used to develop and test. Hosting for the live product doesn't count.
- Not included: anything done outside the US, rent, equipment, and routine work after commercial production. New improvements can qualify if they pass the research tests.

The work has to pass a four-part test: it aims at a new or better function, performance, reliability or quality; relies on engineering, computer science or another hard science; starts out uncertain; and is worked out by trying alternatives.

### The alternative simplified credit, worked through

| Form 6765 line | Amount |
| --- | ---: |
| Line 20: 2026 qualified research expenses | $640,000 |
| Line 21: 2023 to 2025 qualified research expenses | $1,080,000 |
| Line 22: line 21 ÷ 6, half the three-year average | $180,000 |
| Line 23: line 20 minus line 22 | $460,000 |
| Line 24: line 23 × 14% | $64,400 |

The reduced credit (line 26) is 79% of that: $50,876. A first claim, with no R&D in 2023, skips lines 22 and 23 and takes 6% of $640,000: $38,400.

### Using the credit against payroll tax

A qualified small business for 2026 has gross receipts under $5 million for the year and none before 2022 (§ 41(h)(3)). Interest counts as gross receipts.

1. Elect it on Form 6765: check line 33a and enter up to $500,000 on line 34, on a timely original return, extensions included. Complete line 35 if required, then line 36, which is the allowed payroll credit.
2. It starts with the first quarter that begins after the return is filed. File the 2026 return by March 31, 2027 and it starts with April to June payroll.
3. Transfer Form 6765 line 36 to Form 8974 with Form 941. Each quarter it offsets the employer's 6.2% Social Security tax, up to $250,000 of credit, then the employer's 1.45% Medicare tax; unused elected credit carries to the next quarter, not to income tax.

The payroll amount is a maximum estimate for a timely original return, assuming fewer than five prior payroll elections and no controlled group. For filers other than partnerships and S corporations, it is also limited to the current-year general business credit carryforward after income-tax use (Form 6765, line 35).

The calculator's recovery timing assumes the entered wages continue evenly each year and are fully subject to Social Security and Medicare. It ignores each employee's Social Security wage cap, other employees and refund-processing delays. Actual payroll tax capacity may differ. Form line references use the current Form 6765 (December 2024 revision): https://www.irs.gov/pub/irs-pdf/f6765.pdf. Payroll use follows Form 8974 instructions: https://www.irs.gov/instructions/i8974.

The payroll election can be made for five years in total. Credit above $500,000 stays an income tax credit, which carries forward up to 20 years.

### Section 174 and the credit in 2026

Since 2025, US research costs are deductible in the year paid or incurred under § 174A; research done outside the US is still spread over 15 years. Either the § 174A deduction is cut by the credit, or the company elects the reduced credit (79%) on Form 6765, Item A, and keeps the whole deduction.

A company with losses may prefer the full credit if it can use the credit sooner than the deduction. That reduces the loss available to carry forward; compare when each tax benefit can actually be used before electing. The calculator shows the full credit and its maximum payroll allocation, not the reduced-credit election.

Section G of Form 6765 becomes required for tax years beginning in 2026. It can be skipped if the company elects the payroll credit as a qualified small business or, on an original return, has $1.5 million or less in qualified expenses and average annual gross receipts of $50 million or less over the previous three tax years. Apply the limits at the controlled-group level where required. Otherwise report projects covering at least 80% of qualified expenses, capped at 50 projects, and aggregate the rest. See https://www.irs.gov/instructions/i6765.

## R&D tax credit FAQ

### How is the R&D tax credit calculated?

Most startups use the alternative simplified credit: 14% of this year's qualified research expenses above half their average over the past three years, or 6% of this year's if any of those years had none. The regular credit, 20% of spending above a base set by your gross receipts history, rarely suits a young company.

### How much is the R&D tax credit worth?

If any of the previous three years had no qualified spending, 6% of this year's qualified spending: $30,000 on $500,000. A company with qualified spending in all three years that spends the same every year gets 7%. With that history, the faster spending grows, the closer the credit gets to 14% of it. These are full credits before a Section 280C reduced-credit election.

### Can a startup with no revenue or profit claim it?

Yes. With no income tax to cut, a qualified small business can elect up to $500,000 a year against the employer's share of payroll taxes. Unused elected payroll credit carries to later quarters; credit not elected for payroll can carry forward up to 20 years against income tax.

### Who counts as a qualified small business?

A corporation or partnership with under $5 million in gross receipts for the year and no gross receipts in any year before the last five. For 2026 that means none before 2022. Interest counts as gross receipts.

### How much of the R&D credit can I use against payroll tax?

Up to $500,000 a year, subject to the election limits. The Inflation Reduction Act raised it from $250,000 for tax years from 2023. Each quarter, it offsets the employer's 6.2% Social Security tax up to $250,000 of credit, then the employer's 1.45% Medicare tax. Anything unused carries to the next quarter, and you can elect it for five tax years in total.

### When do I get the money?

From the first quarter that begins after you file the return. File your 2026 return by March 31, 2027 and it starts with April to June payroll. You claim it each quarter on Form 8974 with Form 941, and anything you can't use carries to the next quarter. Through a PEO it usually takes longer, because the PEO claims for all its customers together.

### Which expenses qualify for the R&D credit?

US wages for people doing, supervising or directly supporting the research, 65% of what you pay US contractors for it, supplies used up in it, and cloud computing used to develop and test. Rent, equipment and anything done outside the US don't count.

### Does the R&D credit reduce my Section 174A deduction?

Yes, by the amount of the credit, unless you elect the reduced credit: 79% of the full credit, and you keep your whole Section 174A deduction. You make that choice on Form 6765, Item A, on the original return.

### Can I claim the R&D credit for past years?

Yes, on an amended return, generally within three years of filing the original. The payroll election has to be made by the original return's due date, though, so a late claim can only reduce income tax.

### Do I need an R&D study?

You need records showing who worked on which projects, what they were unsure about and how they tested alternatives. Section G of Form 6765 becomes required for tax years beginning in 2026. You can skip it if you elect the payroll credit as a qualified small business, or, on an original return, have $1.5 million or less in qualified expenses and average annual gross receipts of $50 million or less for the previous three tax years. Apply the limits at the controlled-group level where required. Otherwise report the projects covering at least 80% of qualified expenses, capped at 50 projects, and aggregate the rest.

## Claim it with Finta

Finta prepares your R&D credit claim with your tax return, for 10% of credits claimed, with a $500 minimum. Get started: https://app.finta.com/signup?plan=taxes. Pricing: https://www.finta.com/pricing.md

Updated November 2026 for the 2026 tax year.