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Tax Guides

Clear answers to common paycheck and tax questions, with worked examples and links to official sources.

Key federal tax dates for the rest of 2026 and early 2027

Many of the guides come back to the same calendar. These are the dates that matter for the current tax year:

DateWhat happens
October 15, 2026Deadline for 2025 returns filed on extension (Form 4868)
January 15, 2027Fourth estimated tax payment for 2026 (optional if you file and pay in full by February 1)
Mid-February 2027Earliest release of refunds that include the EITC or additional child tax credit
April 15, 20272026 returns and any balance due; first estimated payment for 2027

How the guides are written

There are 28 guides, each answering one question people search for β€” what FITW means on a pay stub, when a refund arrives, whether a state taxes retirement income. Each starts with the direct answer, then works through an example with 2026 figures, and ends with the official sources used. The figures come from the same data files as the calculators, so a guide and its calculator always agree.

Where a viral claim is circulating β€” a "$3,000 refund", for example β€” the guide says plainly whether it is true and points to the IRS page that settles it.

Frequently asked questions

Are the guides updated for the new tax year?

Yes. Figures in the guides are drawn from the 2026 data files and change automatically when the data is updated. Each guide shows the date it was last reviewed.

Sources

Figures are taken from official government publications and were last reviewed on 2026-10-03.

  1. IRS Form 1040-ES (2026), Estimated Tax for Individuals
  2. IRS: Refunds
  3. IRS: Get an extension to file your tax return