Startups
A startup's claim can grow fast as the team grows, and a percentage fee grows with it. Caps, cash flow and what happens if the claim is reduced are the things to settle before signing.
What matters most about fees
A startup's R&D claim can change size quickly: a round of hiring, a new product, a pivot. A percentage fee follows the claim up, for what may be much the same adviser work, and a cap is the term that stops that. Cash matters too: a fee due on filing is paid before the benefit arrives, and a fee due on receipt is paid from it. And a startup is the kind of business where a reduced claim hurts most, because the benefit may already have been spent; who pays the repayment, the interest and any penalty is a question for your country page, and what the fee does is a question for the letter.
Key questions
- What happens to the fee if the claim is reduced?
- When and how is the fee paid?, on filing or on receipt
- How are your fees calculated?, with a worked example at double the claim you expect
- Do you claim every year by default?
Likely red flags
Uncapped success fees on a claim that could double. Automatic renewal clauses with a long notice period, signed in year one and forgotten by year three. Neither is a problem in every case: a cap changes nothing for a claim that will stay small, and a rolling engagement can suit a business that values continuity. The question is whether you know what you have signed.
Fee models to compare
Contingent success fees suit a business with little cash and an uncertain claim. Capped fees keep that and add a ceiling: on the shared example, 20% capped at $60,000 is $50,000 on a $250,000 claim and stays at $60,000 however large the claim grows, with the cap reached at $300,000. Deferred fees move payment to when the benefit arrives, at a price. Hybrid fees trade a fixed element for a lower rate. Compare each at this year's claim and at next year's, if the business grows as planned. Illustrative figures.
General information about choosing and managing an adviser. It is not advice on whether your work qualifies for R&D tax relief.
KnowYourFees.org is published by Swanson Reed, an R&D tax advisory firm that competes with other advisers. This site does not recommend any adviser, including Swanson Reed.
© 2026 Swanson Reed. You may use the templates and checklists for your own business. Official material is used under the terms set by its publisher.

