Best R&D Tax Credit Services in 2026: Startup Payroll Offset Compared

Best for: Venture-backed startups that already use Pilot for bookkeeping and tax and want the credit handled by the same team.

• Fee is published as a clear percentage, so you can estimate cost before signing.
• Bookkeeping, tax and the credit study are handled by one provider, which reduces data handoffs.
• A contingency-style percentage can cost more than a flat fee for companies with large credits.

Our take: Pilot is an accounting firm for startups that publishes most of its prices, including its R&D Tax Credit service at 20 percent of the total credit received. Its tax plans, such as C-Corp filing from 2,450 dollars per year, require Pilot Bookkeeping, so the credit fits best for companies already on that stack. In practice, the advantage is that the team preparing your books and income tax return also documents qualified research expenses, which keeps payroll data, general ledger and Form 6765 consistent. Because the fee is a share of the credit, a 100,000 dollar credit would cost 20,000 dollars, so model the numbers against flat-fee options. In a sales call, ask whether the fee covers state credits, how payroll offset elections are coordinated with your payroll provider for Form 8974, and what audit support is included. Compared with Fondo, Pilot's fee scales with the credit; compared with Boast or Neo.Tax, it is part of a full accounting relationship rather than a standalone credit specialist.

Best for: Seed-stage Delaware C-Corps that want annual tax filing and an R&D credit study from one low-cost provider.

• TaxPass bundles Form 1120, one state filing, Delaware franchise tax and one foreign shareholder filing.
• Listed as a Y Combinator deal on its site, which reflects a startup-focused client base.
• The R&D study price is described only as varying and as low as 500 dollars per add-on, so confirm the actual quote.

Our take: Fondo is a tax and bookkeeping provider for startups. Its TaxPass starts at 1,450 dollars per year as a limited-time price and covers federal Form 1120, one state filing, Delaware franchise tax and one foreign shareholder filing. The R&D Tax Credit Study, which produces Form 6765, is listed as an add-on, and add-ons are priced as low as 500 dollars with pricing that varies. Fondo's site markets up to 500,000 dollars in cash credits per year, which matches the payroll offset ceiling for qualified small businesses. In practice, this suits a seed company that needs its first income tax return and wants the credit election made on time, since the election must be on a timely filed return. In a sales call, ask for the R&D study quote based on your headcount, who prepares Form 8974 each quarter, and what happens if the IRS asks questions. Compared with Pilot, Fondo can be cheaper for a small credit; compared with Boast, it does not publish audit defense terms.

Best for: Startups and growth companies that want R&D credit software backed by specialists, with a startup pricing option.

• Offers separate products for startups, SMBs, enterprises and tax practitioners.
• SMB tier lists supporting documentation and a completed Form 6765 as deliverables.
• Audit support is not described, and the fee percentage requires a consultation.

Our take: Clarus R+D combines R&D credit software with specialist review. Its startups page describes pricing as a small base fee plus a percentage of the credit and mentions a special startup pricing option, but does not list amounts. A free eligibility check, a free consultation and an online calculator are available before you commit. The homepage notes that startups can claim up to 500,000 dollars against payroll taxes, while the startups page still describes a 250,000 dollar Social Security cap, so confirm the current limits with your advisor. In practice, the software gathers project and payroll data and specialists review the claim before producing Form 6765 and supporting documentation. In a consultation, ask for the base fee and percentage in writing, what audit support is included, and how the software pulls data from your payroll and engineering tools. Compared with Pilot, its percentage may be lower but is not published; compared with Leyton, it leans more on self-serve software.

Best for: US and Canadian companies with up to about 100 employees that want audit defense built into their R&D credit claim.

• Says clients spend about 5 hours on the process, compared with 40-plus hours with traditional consultants.
• Serves both US R&D credits and Canadian claims, useful for cross-border teams.
• Pricing is not published, so cost comparisons require a quote.

Our take: Boast prepares R&D tax credit claims for companies in the US and Canada and focuses on smaller technical teams, with more than 2,000 clients by its own count. It does not publish fees. Its AuditShield offering states that Boast will defend you in an IRS or CRA audit of the claim, and its platform compiles audit documentation from project tickets, timestamps and expense data in your internal systems. Boast reports that more than 98 percent of claims are delivered without an IRS or state audit, a vendor figure rather than independent data. In practice, you connect engineering and payroll tools, meet with in-house tax professionals during the year, and review the claim before filing. In a sales call, ask for the fee structure, whether AuditShield is included or extra, and how payroll offset elections are coordinated. Compared with Clarus, Boast puts more emphasis on audit defense; compared with Neo.Tax, it targets smaller companies.

Best for: Manufacturers, life sciences firms and other non-software companies that want a consultancy with engineers and scientists on staff.

• Team includes accountants, scientists, engineers and doctors.
• Also handles state credits, grant funding and the orphan drug tax credit.
• You need an assessment and quote to learn the fee structure.

Our take: Leyton is an international consultancy with a US practice covering federal and state R&D credits, grant funding and the orphan drug credit. Its R&D page says the initial assessment costs nothing if no credit is identified, but it does not publish the fee model after that. Leyton describes unlimited technical support during an audit, including gathering documents, drafting IDR responses and acting as technical support in IRS conferences. It also notes that qualified small businesses can use the credit against payroll taxes. In practice, Leyton fits companies outside pure software, such as manufacturers, food and beverage producers or medical device firms, where technical narratives need engineering or scientific input. In an assessment call, ask whether fees are contingent on the credit, how contractor costs are handled, and what audit support costs after filing. Compared with Boast, Leyton covers a broader range of industries; compared with Pilot or Fondo, it is a standalone specialist rather than an accounting provider.

Best for: Large company tax departments that want AI-driven R&D credit documentation traced to source data.

• Pulls signals from engineering tools such as Jira and GitHub and from payroll and ledger data.
• Positions every figure as traceable to source data for auditors.
• No published pricing, and the homepage does not address the startup payroll offset.

Our take: Neo.Tax began with a focus on small businesses and startups, according to its about page, but its current homepage targets enterprise tax teams, with customer logos including Adobe, Block, Capital One and Notion and testimonials from tax leaders at large firms. The platform uses AI to identify qualifying projects from engineering tools such as Jira and GitHub and from payroll and ledger data, and it states that every figure is traced to source. It lists an agent called QRE Defender without describing it in detail. Pricing is not published; the next step is a 30-minute walkthrough on your own data. In practice, this suits companies with large engineering organizations and an in-house tax team that wants documentation at scale. In a demo, ask how the platform handles payroll offset elections for smaller subsidiaries, what audit support is included, and how data access is secured. Compared with Boast, Neo.Tax aims at much larger companies.