When are quarterly estimated taxes due in Florida?

For 2026, quarterly estimated tax payments are due: Q1 on April 15, Q2 on June 16, Q3 on September 15, and Q4 on January 15, 2027. Florida has no state income tax, so you only pay federal estimated taxes. If any date falls on a weekend or holiday, the deadline moves to the next business day.

How much should I pay in quarterly estimated taxes?

The IRS safe harbor rule requires you to pay either 100% of last year's tax liability (110% if AGI over $150,000) or 90% of this year's tax. The simplest approach for Florida self-employed: take last year's total federal tax, multiply by 110%, divide by 4, and pay that amount each quarter.

What happens if I miss a quarterly estimated tax payment?

The IRS charges an underpayment penalty of approximately 8% annually (current rate) on the underpaid amount, calculated from the due date to the date of payment or April 15. The penalty applies even if you overpay later or get a refund — each quarter is calculated independently.

Do I have to pay quarterly taxes if I'm self-employed in Florida?

Yes, if you expect to owe $1,000 or more in federal taxes for the year. Since Florida has no state income tax, you only make federal estimated payments using Form 1040-ES. If all your income is W-2 with adequate withholding, you may not need to make estimated payments even with side income.

Quarterly Estimated Taxes in Florida: The Self-Employed Guide to Avoiding Penalties

Miss a quarterly payment and the IRS charges you interest — even if you overpaid for the year. Here's exactly when to pay, how much, and how to reduce what you owe.

Quarterly estimated taxes are required for any self-employed individual in Florida who expects to owe $1,000 or more in federal taxes. Since Florida has no state income tax, you only make federal payments — but missing them triggers penalties even if you overpay for the year. The IRS calculates penalties on each quarter independently, which means paying everything in Q4 still results in penalties for Q1-Q3.

2026 Quarterly Due Dates

Quarter	Period Covered	Due Date
Q1	January 1 – March 31	April 15, 2026
Q2	April 1 – May 31	June 16, 2026
Q3	June 1 – August 31	September 15, 2026
Q4	September 1 – December 31	January 15, 2027

How Much to Pay: The Safe Harbor Rule

The IRS provides two safe harbors — meet either one and you avoid all underpayment penalties regardless of what you actually owe:

Option 1 (easiest): Pay 110% of last year's total tax liability, divided into 4 equal payments. If you paid $50,000 in 2025, pay $55,000 in 2026 ($13,750/quarter). This works even if your income doubles — no penalty.
Option 2: Pay 90% of this year's tax liability across the 4 quarters. Requires more accurate forecasting but results in lower payments if income drops.

For most Florida self-employed professionals, Option 1 is the right choice. It requires zero forecasting and guarantees no penalties. If you overpay, you get a refund.

How to Calculate Your Quarterly Payment

For a self-employed Florida professional earning $200,000:

Tax Component	Annual Amount	Quarterly Payment
Federal income tax	~$35,000	$8,750
Self-employment tax	~$24,000	$6,000
Total	~$59,000	$14,750
Safe harbor (110%)	~$64,900	$16,225

How to Reduce Your Quarterly Payments

The best way to reduce estimated payments is to reduce your tax liability. Every strategy that lowers your annual tax also lowers your quarterly payments:

S-Corp election (IRC §1361): Saves $10,000-$25,000/year in SE tax → quarterly payments drop $2,500-$6,250
Solo 401(k) (IRC §401(k)): Shelter up to $69,000 → quarterly payments drop up to $6,000
Home office deduction (IRC §280A): Deduct $3,000-$6,000 → quarterly payments drop $250-$500
HSA contributions (IRC §223): Deduct $4,300-$8,750 → quarterly payments drop $350-$700

An S-Corp election alone can reduce your quarterly payment by $2,500-$6,250 — that's real cash flow every 3 months.

How to Pay

Three options:

IRS Direct Pay (irs.gov/payments) — free, instant, no account needed
EFTPS (eftps.gov) — requires enrollment, best for recurring payments
Mail Form 1040-ES with a check — slowest option, not recommended

Use payment type "Estimated Tax" and select the correct tax year and quarter.

Want to see exactly how much your quarterly payments should be based on your specific situation? Run your free tax assessment — it calculates your optimized tax liability and shows you how much each strategy saves per quarter.