"Claude for accountants" usually means someone showing you a prompt that summarizes a P&L. That's not a business. This is: three named services a CPA or accounting firm will pay a monthly or per-engagement fee for, each built on a Claude Skill and each driven by a statutory change with an effective date. The setup — one Claude Project per client, one Skill per service, human verification on every number and date — is in how to run an AI service business with Claude, and the market case for accounting is in the most profitable accounting niches guide. This page is the three services.
Accounting is arguably the strongest of the three markets for this model, because the demand drivers are statutory — they have hard dates and dollar figures attached — and the work is structured analysis, exactly what AI leverage collapses from days to hours. The catch, and it's the whole job: in accounting a wrong number isn't a bad look, it's malpractice exposure. The model drafts; you verify every figure; that's the deal.
Service 1: The Section 174 R&D catch-up memo
What the client gets: for the firm's eligible small-business clients, a memo that screens for R&D-credit eligibility, drafts the computation, and lays out the retroactive recovery — the single highest-value engagement in accounting right now.
Dated driver: the OBBBA restored immediate R&D expensing under the new §174A for tax years beginning after December 31, 2024, and opened a retroactive amendment path for small businesses — roughly $31M average gross receipts and under, per the §448(c) test — covering 2022–2024 returns, with IRS implementing guidance following in 2025. Every eligible firm's clients have a closing window to recover, and the big R&D-credit shops price for large filers and skip the sub-$10M firm whose refund is "only" $50K–$400K. That gap is the niche. The full case is in the Section 174 R&D catch-up deep-dive.
The Claude Skill: a Skill that runs eligibility screening from a client questionnaire, drafts the computation with the state-conformity and §280C interactions flagged, and produces the memo the firm reviews. Fee band: this is a $5K–$15K per-engagement service, not a monthly retainer — priced against the refund it recovers, not your production time.
The verification: every figure, every conformity treatment, every date confirmed against primary guidance before the firm's name goes on it. The Skill drafts the analysis; the CPA signs it; you are the production line between.
Service 2: The BOI-reporting workflow
What the client gets: a repeatable beneficial-ownership-information workflow — a client-facing intake, a completeness check, and a filing-ready summary — packaged so the firm can serve BOI at volume instead of one anxious phone call at a time.
Dated driver: beneficial-ownership reporting has been a moving target, and the action has shifted to the states — with a state-level BOI obligation taking effect January 1, 2026 and other states drafting. Firms need a clean, repeatable process precisely because the rules keep changing and clients keep asking. Fee band: $300–$600/mo as a standing service, or a per-filing fee; the value is the firm never reinvents the process.
The Claude Skill: a Skill that walks the intake, flags missing beneficial-owner data against the current requirement, and produces the summary. Because the obligation varies by jurisdiction and keeps shifting, the verification step — confirming the current rule for the client's state before filing guidance goes out — is the service.
Service 3: The tax-planning brief
What the client gets: a periodic, plain-English planning brief for the firm's business clients — what changed this quarter (rates, credits, expensing, entity treatment), what it means for this client's situation, and the moves to consider before year-end. The firm delivers it under its own name as a retention and advisory-revenue tool.
Dated driver: the tax landscape is unusually active — restored bonus depreciation (bonus returned to 100% following the January 19, 2025 change reversing the phase-down), §174A expensing, crypto broker basis reporting phasing in for 2026, and shifting state conformity — so "what changed and what should I do" is a genuine quarterly question with dated answers. Fee band: $400–$900/mo depending on client complexity.
The Claude Skill: a Skill that takes the client's entity type and situation and drafts the brief against the quarter's confirmed changes, in the firm's voice. As always, the numbers and effective dates are verified against primary sources before it ships.
Next steps
The three Skills above come from the five accounting mega-prompts in the AI Service Business Kit ($79 once), with the playbook that prices and packages each one. When you're running the R&D memo across a dozen firms, the hosted Accounting pack ($99/mo) runs the same skills as guardrailed run-forms with QA on the output. Niche Radar ($19/mo) re-scores the accounting board every Tuesday so you catch the next statutory window early. Not sure which service fits your background? The free Sub-Niche Opportunity Report scores the accounting sub-niches with their dated drivers and fee ranges — start there, verify the dates yourself, and build the Project.