Next federal deadline
January 15, 2027
Q4 — covers income earned Sep 1 – Dec 31.
Iowa addendum
Iowa Form 1040ES for quarterly estimates if you expect to owe $200+.
Verify with Iowa DORLast reviewed: August 2026. Always confirm current rules with the official source above.
Iowa tax rate & quarterly deadlines
Iowa income tax
3.8% flat
Set aside for state estimated tax on top of federal.
Gig driver set-aside range
15–30% of net gig income
Covers self-employment + income tax. Use the kit calculator to dial in your number.
Federal quarterly estimated tax due dates. Weekends/holidays shift the date slightly. Iowa state estimates follow the same schedule.
Common gig driver deductions
Track these year-round to lower your taxable gig income.
Standard mileage
70¢/mile (current IRS rate) covers fuel, maintenance, depreciation & insurance.
Phone & service
Deduct the business-use percentage of your phone and monthly plan.
Vehicle supplies
Phone mounts, chargers, floor mats, cleaning supplies.
Health insurance
Self-employed health insurance premiums are deductible above-the-line.
Home office
If you use a space exclusively for business admin, you may qualify.
Retirement (SEP/Solo 401k)
Contributions reduce taxable income while saving for retirement.
In the Iowa kit
- Federal quarterly cheat sheet
- Iowa state addendum checklist
- Estimated-tax calculator
- Printable mileage tracker (PDF)
- Payout set-aside worksheet
- Quick-start guide
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