Estimates only — based on standard IRS rates. Consult a tax professional before making payments. Rates used: SE tax 15.3%, federal income brackets applied to net earnings after deducting 50% of SE tax.
Year-to-date totals
Total earnings
$0
All 4 quarters
SE tax owed
$0
15.3% of net
Federal income tax
$0
Estimated bracket
Total tax bill
$0
SE + federal
Already set aside
$0
Paid quarters
Still owed
$0
Unpaid quarters
Annual breakdown
| Quarter | Income period | Earnings | SE tax | Fed income | Total due | IRS deadline | Status |
|---|
How the math works
01
Net earnings
Start with your gross 1099 income. The IRS taxes 92.35% of it for SE purposes.
02
SE tax (15.3%)
You pay both employer and employee Social Security + Medicare. That's 12.4% + 2.9% = 15.3% on net earnings.
03
SE deduction
The IRS lets you deduct 50% of your SE tax from taxable income before calculating federal income tax.
04
Federal income tax
Applied to your adjusted gross income minus the standard deduction and 50% SE deduction, using 2026 tax brackets.
05
Quarterly payments
Divide your annual estimate by 4. Pay each quarter by the IRS deadline to avoid underpayment penalties.
06
Safe harbor rule
Pay at least 100% of last year's tax liability (110% if income > $150K) to avoid penalties, even if actual tax ends up higher.