Maximize Your Refund by the 2024 Tax Deadline

I’ve filed my taxes on April 14th more years than I’d like to admit. There’s something about a hard deadline that makes me procrastinate right up to the edge. Last year I finally set a rule for myself: done by March 31st. The difference in stress level was dramatic, and I found two deductions I’d have missed if I was rushing at the last minute.

If you’re trying to understand the 2024 tax deadline landscape, here’s everything you need to know — including the parts that trip people up.

The Main Deadline

The federal income tax filing deadline for the 2023 tax year (the return you file in 2024) is April 15, 2024. If April 15 falls on a weekend or federal holiday, the deadline extends to the next business day. This year, April 15 is a Monday, so no shift — it’s April 15, period.

State deadlines generally follow the federal date but not always. A handful of states have their own schedules. Check your state’s tax authority website — most have prominent deadline notifications on their homepage.

Extensions

Filing Form 4868 by April 15 gives you until October 15, 2024 to actually file your return. The form is straightforward — you’re not explaining yourself, just requesting more time. You can file it electronically for free through IRS Free File.

Important: the extension is an extension to file, not an extension to pay. If you owe taxes, that money is still due on April 15. If you don’t pay by April 15 and later file an extension, the IRS will charge interest and a late payment penalty from April 15 forward, even if you file by October 15. Estimate what you owe and pay it — even an overpayment that generates a refund is better than underpaying and accruing penalties.

Estimated Tax Payment Deadlines (If Applicable)

If you’re self-employed, have significant investment income, rental income, or any income that doesn’t have tax withheld, you’re likely required to make quarterly estimated payments. Missing these triggers an underpayment penalty even if you pay everything owed at filing time.

For 2024, the estimated payment due dates are:

• April 15, 2024 (Q1)
• June 17, 2024 (Q2 — note this is a Monday, not the 15th)
• September 16, 2024 (Q3)
• January 15, 2025 (Q4)

The safe harbor rule: if you pay at least 100% of last year’s tax liability (or 110% if your prior-year AGI was over $150,000), you won’t owe an underpayment penalty regardless of what you end up owing. That’s the number I target as a self-employed person — it gives me certainty even if my income varies.

Documents You’ll Need

Start pulling these together in early February, when most should have arrived:

• W-2s from employers (due to you by January 31)
• 1099s — 1099-NEC for freelance/contractor income, 1099-INT for interest, 1099-DIV for dividends, 1099-B for investment sales
• 1098 for mortgage interest paid
• 1095-A if you received coverage through a marketplace exchange (needed to reconcile the premium tax credit)
• Last year’s return — especially useful for carryforward items and to verify you’re not missing a form you received last year

Deductions and Credits Worth Knowing

The standard deduction for 2023 is $13,850 for single filers, $27,700 for married filing jointly, $20,800 for head of household. These numbers are high enough that most people don’t itemize — only worth doing if your deductible expenses exceed the standard amount.

Deductions that can make itemizing worth it: mortgage interest (especially meaningful in the early years of a mortgage), state and local taxes up to $10,000, significant charitable contributions, and large out-of-pocket medical expenses exceeding 7.5% of AGI.

Credits reduce your tax bill dollar-for-dollar, making them more valuable than deductions. The Earned Income Tax Credit, Child Tax Credit (up to $2,000 per qualifying child), Child and Dependent Care Credit, American Opportunity Tax Credit for college (up to $2,500/student), and the Retirement Savings Contributions Credit (Saver’s Credit) are all worth reviewing for eligibility.

Retirement Contributions

You can make IRA contributions for the 2023 tax year up until April 15, 2024 — the filing deadline. If you’re looking to reduce your tax bill and haven’t maxed out your IRA, this is one of the few options that allows retroactive 2023 tax action. The contribution limit for 2023 is $6,500 ($7,500 if you’re 50 or older). Traditional IRA contributions may be deductible depending on your income and whether you have a workplace retirement plan.

Late Filing Penalties

If you miss April 15 without filing an extension, the IRS charges a failure-to-file penalty of 5% of unpaid taxes per month (or partial month), up to 25% of what you owe. If you also haven’t paid, an additional failure-to-pay penalty of 0.5% per month applies on top of interest.

If you’re due a refund, there’s technically no penalty for filing late — the IRS won’t pay you interest on your refund, but you won’t be penalized. Still, claiming your refund sooner is obviously better.

Amending a Return

Made a mistake after filing? File Form 1040-X. You generally have three years from the original filing date to amend a return and claim a refund. Amended returns take longer to process than original returns — the IRS typically processes them within 16-20 weeks. You can check the status at the “Where’s My Amended Return?” tool on IRS.gov.

The best tax outcome usually comes from combining thorough organization (don’t miss deductions you’re entitled to) with filing early enough to think clearly. April 14th at 11 PM is not the moment to be discovering that you’re missing a 1099 or that you should have been making quarterly payments all year.