10/21/2026
Tax Mistake I See Too Often: Waiting Until December to Fix Withholding
By late October, many taxpayers already have a good idea whether their 2026 income will be higher than expected.
Maybe you:
- changed jobs;
- received larger bonuses or commissions;
- worked more overtime;
- earned more business income;
- took retirement distributions; or
- realized investment gains.
If withholding or estimated payments haven’t kept up, waiting until December can leave very little time to correct the problem.
The good news is that there may still be options! Depending on your situation, there may still be time to review:
- federal and Arizona withholding;
- estimated tax payments;
- retirement contributions; and
- other year-end tax-planning opportunities.
The lesson: Don’t wait for your tax return to reveal that you were underpaid all year.
October is a much better time to find out, and you may still have time to do something about it! If you’re unsure whether your 2026 tax payments are on track, comment REVIEW below.
Scott Kunz
Valhalla Tax & Finance LLC