Published: 19 February 2026

Common tax return mistakes and fixes

Most filing mistakes are avoidable with a short pre-submit checklist.

Common issues include missing expense evidence, duplicated income, incorrect category totals, or forgetting previous payments already made.

Before filing, reconcile totals against your records and review unusual entries line by line. Small checks now prevent correction work later.

If you notice an error after submission, handle it quickly while details are still fresh and records are easy to verify.

Key points