Check how the prior-year claim must be filed.
Identify the taxpayer, tax year, original return, payments, extensions, and any later filings with the tax preparer. Refund limitation periods and procedural requirements depend on the facts. Avoid assuming that every business has the same number of years available merely because a prior year is under discussion.
Entity type also matters. A partnership may need a different correction procedure from an ordinary amended return. Prior elections and group circumstances can affect the available treatment. Resolve these questions early enough that a documentation project does not proceed on an unavailable filing path.
What information does the IRS currently request?
The IRS amended-return FAQs explain the information required for a research credit refund claim. Under the update effective June 18, 2024, the initial claim identifies the business components, the research activities for each, and totals for qualified employee wages, supplies, and contract research.
The IRS waived the initial requirement to submit individuals' names and the information each person sought to discover. That information can still be requested during examination. The change concerns what accompanies the claim; it does not remove the need to substantiate the underlying research.
Use the current FAQ update together with the instructions applicable to the return. Older summaries can describe superseded requirements. Do not assume that an opportunity to correct an incomplete claim will always be available.
Use records from the year you are reviewing.
Locate records created during the year being examined: project files, technical correspondence, test results, payroll detail, invoices, and contracts. Ask knowledgeable participants to explain them and identify uncertainty in their recollections. Clearly distinguish a present-day summary from a record created during the development work.
A narrative written today can organize older evidence, but it cannot turn an unsupported assumption into a documented fact. If important records are unavailable, assess the effect on the particular activities and expenses rather than applying a blanket qualification percentage.
For employee services, reconcile the individuals and periods to the historical payroll. For contract work, retrieve the agreement that actually governed that year rather than substituting the client's current standard terms.
Explain what changed from the original return.
Keep a comparison of the amounts originally reported and the proposed revised amounts, with a reason and source for each change. Distinguish newly identified qualified expenses from corrections to previous allocations, method inputs, or arithmetic.
Review the relevant historical inputs and method-election rules with the tax preparer. Coordinate deduction effects, carryforwards, pass-through consequences, and any related state filings. The credit calculation is one part of the return analysis, not a standalone refund prediction.
Your firm should receive the proposed calculation, reconciled expense schedules, project descriptions, claim information, a list of source records, and any outstanding tax questions. Your firm should be able to trace both the revised total and the changes from the client’s filed return.
Get help preparing a prior-year claim.
Paribus prepares your client’s prior-year R&D study package, including expense analysis, revised credit calculations, and supporting workpapers for your firm’s review. Tell us which years are involved, what the client developed, whether they already claimed a credit, and what records are available.
Do not send a tax return or payroll file through the initial inquiry form. Call to discuss preparation and arrange an appropriate information-sharing process. Confirm your client’s filing eligibility and deadlines before a claim is submitted.
For related recordkeeping questions, see our document request guide and guide to incomplete time records.