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U.S. tax guide Tax Planning

Year-End Tax Planning Checklist

Use the final months of the year to review records, projections, payroll, estimated payments, and business decisions.

6 min read August 2026

Use the final months of the year to review records, projections, payroll, estimated payments, and business decisions. The right approach depends on your facts, filing history, state, entity structure, and current federal and state rules. Use this guide as a starting point for an informed conversation, not as a substitute for advice from a professional who has reviewed your records.

Start with accurate, complete records

Gather the documents that support income, expenses, payments, and account balances. Compare them with prior filings and current bookkeeping, note anything missing, and keep a short list of questions. Clear records reduce follow-up and help a tax or accounting professional define the engagement correctly.

Confirm scope, deadlines, and responsibility

Before work begins, confirm which federal and state filings are included, who will prepare or review them, what information you must provide, how changes are handled, and when fees become due. Tax responsibilities remain time-sensitive even when you engage a professional, so keep your own calendar of deadlines and requested actions.

Review before you approve

Read completed reports, returns, notices, or recommendations before authorizing submission. Ask about figures you do not recognize and retain a copy of the final work with the supporting records. For current forms, deadlines, and official guidance, consult IRS.gov and the relevant state tax authority.

Key Takeaways

  • Review year-to-date books before year end.
  • Update income projections and estimated payments.
  • Resolve payroll and contractor records early.
  • Discuss major transactions before they occur when possible.
Guide FAQ

Frequently Asked Questions

No. It provides general educational information. A qualified professional must review your facts, records, state, filing history, and current law before providing advice.

Use IRS.gov for federal information and the official tax authority website for each relevant state. Rules and deadlines can change, so confirm current guidance before acting.

Verify the professional and use the secure document process they provide. Do not send Social Security numbers, returns, bank statements, or account credentials in an initial support message.
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