Filing guide, cited to official Maryland sources
How to claim the Maryland R&D credit
These steps, forms and dates are procedure taken from official Maryland publications, listed under "Sources for this section" and verified on . The rate, base and carryforward figures on this page come from Ricerca's rules registry.
Step by step
- 1 Substantiate Maryland qualified research and development expenses for the credit year and for the prior years the Maryland base amount is built from. Commerce follows the federal §41 definitions of qualified research and qualified research expenses, limited to research conducted in Maryland.
- 2 Apply to the Maryland Department of Commerce through its online portal by November 15 of the year after the tax year in which the expenses were incurred. November 15, 2026 falls on a Sunday; for tax year 2025 expenses, Commerce's portal is open June 1 through Monday, November 16, 2026.
- 3 Establish whether you are a small business: net book value of assets under $5,000,000, as reported on the balance sheet at the beginning or end of the tax year. Small businesses are certified from their own $3.5 million share of the annual cap, and their credit is refundable.
- 4 Wait for certification. Commerce certifies approved credits by February 15 of the year after the application. When applications exceed a pool, every applicant in it is prorated, and no single applicant can be approved for more than $250,000.
- 5 Claim the certified amount on an amended return for the year the expenses were incurred, or on a return for any of the 7 tax years that follow. Attach the Department's certification either way.
- 6 Report it on Form 500CR: Part K-I if you are not certified as a small business, Part K-II if you are. A return claiming a Form 500CR business credit must be filed electronically unless the Comptroller grants a waiver requested on Form 500CRW.
Maryland R&D credit application checklist (Nov. 15) Federal Form 6765, line by line Estimate the federal credit State R&D credits in 2026: rates and refundability
Key dates
- Application deadline
- November 15 of the year after the tax year in which the expenses were incurred. November 15, 2026 falls on a Sunday; Commerce's online portal for tax year 2025 applications is open June 1 through Monday, November 16, 2026. Source
- Certification
- Commerce certifies approved credits by February 15 of the year after the application, so applications filed in 2026 are certified by February 15, 2027. Source
- Claim window
- Amend the return for the year the expenses were incurred, or attach the certification to a return for any of the 7 following tax years. Source
- Program end
- Commerce may not approve a credit for a taxable year beginning after December 31, 2030. Chapter 352 of 2026 (the DECADE Act) added that limit and removed the earlier June 30, 2027 end date. Source
Which form to file
| Form | Who files it | Link |
|---|---|---|
| Maryland Research and Development Tax Credit applicationOnline portal, Maryland Department of Commerce | Any business with Maryland qualified research and development expenses, by November 15 of the year after the tax year | Official page |
| Form 500CR, Business Income Tax Credits, Part K-I500CR (Part K-I) | Businesses not certified as a small business (nonrefundable) | Official page |
| Form 500CR, Business Income Tax Credits, Part K-II500CR (Part K-II) | Businesses certified as a small business (refundable) | Official page |
Who can claim it
- The research must be conducted in Maryland, and the expenses must be qualified research expenses under §41(b) of the Internal Revenue Code.
- Small business means a for-profit corporation, limited liability company, partnership or sole proprietorship with net book value of assets under $5,000,000 at the beginning or the end of the tax year, as reported on the balance sheet.
- Members of a controlled group of corporations under §41(f) are treated as a single taxpayer, and each member's credit is its proportionate share of the group's qualified research expenses.
Program rules worth knowing
- The annual cap is $12 million: up to $8.5 million for businesses that are not small and $3.5 million reserved for small businesses. If one pool is undersubscribed, the unused amount is added to the other pool for that year.
- When applications exceed a pool, Commerce approves each applicant's requested credit multiplied by the same fraction: the pool divided by the total requested.
- A small business can claim a refund of credit above its income tax for the year. Other businesses carry the excess forward, up to the 7th taxable year after the year the expenses were incurred.
Maryland R&D tax credit FAQ
When is the Maryland R&D tax credit application due?
How much Maryland R&D credit can one company receive?
Is the Maryland R&D credit refundable?
How do I claim the credit once Commerce certifies it?
Is the Maryland R&D credit available for 2026 and later?
Sources for this section
The Maryland filing guide and FAQ above are drawn from these official publications and were verified on . They are re-checked each year and whenever a listed deadline passes.
- Research and Development Tax Credit (Maryland Department of Commerce)
- Md. Code, Tax-General §10-721 (Maryland General Assembly)
- Chapter 352 of 2026 (HB 898), the DECADE Act (Maryland General Assembly)
- 2025 Maryland Corporation Income Tax Instructions, Form 500CR credit list (Comptroller of Maryland)
Maryland R&D credit rules for TY2026
Each row is a field from the registry entry our engine applies. A blank field says so; it is never filled in.
- Credit for TY2026
- Current credit Yes. Our rules registry carries a current Maryland research credit for tax year 2026.
- Structure
- Incremental: the credit applies to qualified research expenses above a state base amount
- Credit rate
- 10% of qualified research expenses above the base amount
- Base method
- The base amount is the federal §41(c) computation with Maryland qualified research expenses and Maryland gross receipts substituted: the fixed-base percentage is Maryland qualified research expenses as a share of Maryland gross receipts for the preceding years the statute counts.
- Carryforward
- 7 years
- Carryback
- None recorded
- Refundable?
- Refundable for a small business the registry records a small-business test of $5,000,000 net book value of assets.
- Small-business threshold
- $5,000,000
- State form
- Form 500CR
- Statute
- Md. Tax-Gen. Code Ann. §10-721
How the Maryland credit is computed
The Maryland credit is incremental: it applies to the qualified research expenses that exceed a state base amount, not to the whole year's spending. The registry carries a rate of 10%.
The base amount is the federal §41(c) computation with Maryland qualified research expenses and Maryland gross receipts substituted: the fixed-base percentage is Maryland qualified research expenses as a share of Maryland gross receipts for the preceding years the statute counts.
Unused credit carries forward 7 years. Refundability: refundable for a small business - the registry records a small-business test of $5,000,000 net book value of assets.
Ricerca computes the Maryland figure from the same substantiated expenses as the federal §41 credit, under the registry entry for the year claimed. Where the registry is silent, the study says so and the point is resolved with your return preparer, not assumed.
Claiming it alongside the federal credit
The federal §41 credit comes first: it is computed from the qualified research expenses the study substantiates and filed on Form 6765 with the return. The Maryland credit is then computed from that same base under the state's own rules.
State credits generally reach only research performed in the state, so the study records where each expense was incurred as it is built, not at filing time.
One base, two computations
- 1 Qualify the activities under the four-part test and total the year's QREs.
- 2 Compute the federal §41 credit and file it on Form 6765.
- 3 Apply the Maryland entry above to the Maryland share of that base, and file it on Form 500CR.
What the registry tells the preparer
These notes travel with the Maryland entry inside the platform, reproduced verbatim for the person signing the return, except where a note is marked as corrected against the statute while the registry update is pending.
- Maryland's 3% basic R&D credit was repealed for tax years beginning after December 31, 2020 (S.B. 196, Ch. 114, Acts of 2021); only the 10% growth credit remains. Small-business status (net book value of assets under $5M) does NOT change the rate - it makes the credit refundable and reserves a small-business set-aside of the capped annual program allocation.
- Application-based: certified by the Maryland Department of Commerce out of a capped annual allocation. The Maryland base amount is the §41(c) base computed with Maryland QREs and Maryland gross receipts (fixed-base percentage = Maryland QREs / Maryland gross receipts for the 4 preceding years); substantiate both before applying. (Corrected against Md. Code, Tax-Gen. §10-721(a)(3); registry update pending.)
Registry sources
The citations the Maryland registry entry carries, verbatim: what the study cites and a reviewer can check.
- Statute
- Md. Tax-Gen. Code Ann. §10-721
- Form
- Form 500CR
Registry entry version 2024.1, exported from services/study-api/app/engines/rules_engine.py (STATE_RULES_2024 + STATE_RULES_REGIME_OVERRIDES via RulesEngine.get_state_rules) on September 10, 2026. The entry above governs TY2026; a study for an earlier year uses that year's entry.
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