Sources & disclaimer

Where the numbers come from.

The rates, rules and deadlines in DayHatch come from these official pages. The app links to the same pages on its Taxes tab and in Help, with no subscription needed.

• IRS standard mileage rateswww.irs.gov/tax-professionals/standard-mileage-rates
• IRS Announcement 2026-11: the mid-2026 mileage rate change (IRB 2026-29)www.irs.gov/irb/2026-29_IRB
• IRS Notice 2026-10: 2026 standard mileage rateswww.irs.gov/pub/irs-drop/n-26-10.pdf
• IRS Publication 463: travel, gift and car expenses (recordkeeping)www.irs.gov/publications/p463
• IRS: estimated taxes (deadlines and safe harbors)www.irs.gov/businesses/small-businesses-self-employed/estimated-taxes
• IRS Form 1040-ESwww.irs.gov/forms-pubs/about-form-1040-es
• IRS Topic 554: self-employment taxwww.irs.gov/taxtopics/tc554
• IRS Schedule SE (Form 1040)www.irs.gov/forms-pubs/about-schedule-se-form-1040
• Social Security Administration: contribution and benefit base (wage base)www.ssa.gov/oact/cola/cbb.html
• IRS Rev. Proc. 2025-32: 2026 brackets and standard deduction (IRB 2025-45)www.irs.gov/irb/2025-45_IRB
• IRS: state government websites (find your state tax agency)www.irs.gov/businesses/small-businesses-self-employed/state-government-websites

The state rate is a rough effective rate that DayHatch pre-fills and you can change in Settings. It isn’t an official figure: check it with your state tax agency.

Disclaimer

DayHatch is not affiliated with, endorsed by, or acting on behalf of the IRS or any government agency. It is not a tax preparer.

DayHatch’s figures are estimates to help you set money aside. It doesn’t file your return. Check big decisions with a tax professional.