OwedZero: 1099 Tax Estimator

Synergy Software Sol

About this app

NOT A GOVERNMENT APP — OwedZero is not affiliated with the IRS or any government agency. It is an independent app from Synergy Software Solutions. Estimates are for planning only, not tax, legal, or accounting advice. OwedZero does not file returns or send tax payments.

Plan your 1099 taxes with a worksheet you can inspect.

OwedZero helps US freelancers, independent contractors and gig workers estimate self-employment tax, plan quarterly estimated taxes and organize income, receipts and mileage. No bank login or account is required.

FREE FOR NOW
All features in this release are included without a purchase or subscription. This is an early-access release; future pricing may change.

2026 FEDERAL TAX PLANNING
• 2026 federal brackets and standard deductions for single, married filing jointly and head of household
• Self-employment tax, Social Security wage-base limits and Additional Medicare estimates
• W-2 income and withholding alongside 1099 income
• General 90% current-year and 100%/110% prior-year payment comparisons
• Quarterly dates through January 15, 2027, remaining balances and catch-up amounts
• A plain-English worksheet showing how the estimate is calculated

ORGANIZE YOUR RECORDS
Log income and track amounts you have moved to your own tax savings. Add receipt details manually, attach an optional image and review the suggested Schedule C category. OCR and scheduled reminders are not provided. Keep a manual trip log with dates, miles and business purposes.

DATED MILEAGE RATES
For 2026 business trips, the app uses 72.5 cents per mile through June 30 and 76 cents from July 1. When mileage is logged, car-category receipts are excluded from the expense estimate to avoid combining mileage with the same vehicle's actual costs. Confirm vehicle eligibility and exceptions separately.

EXPORT AND DELETE
Save a CSV preparer summary or a JSON copy of your records. Use More → Delete all my data to clear local app records. Exported copies are separate. Calculations work offline; Play services and IRS links need connectivity.

KNOW THE LIMITS
This is a 2026 planning calculator, not a return preparer. State amounts are rough adjustable rates, not full state calculations. Credits, capital gains, itemized deductions, AMT, married filing separately and special taxpayer rules are not modeled. Verify retirement and health-insurance deduction eligibility independently. Prior-year safe harbor requires a 12-month return; the zero-tax exception also requires full-year US citizenship or residency. Payment timing matters. No final underpayment penalty is calculated.

OFFICIAL SOURCES
2026 Form 1040-ES: https://www.irs.gov/pub/irs-pdf/f1040es.pdf
2026 brackets and deductions: https://www.irs.gov/irb/2025-45_IRB
Self-employment tax: https://www.irs.gov/taxtopics/tc554
Mileage rates: https://www.irs.gov/tax-professionals/standard-mileage-rates
Social Security wage base: https://www.ssa.gov/oact/cola/cbb.html
Estimated-tax rules: https://www.irs.gov/taxtopics/tc306

What’s new

Free for now: all current features are included.
Improved 2026 tax planning, partial-payment balances and deduction handling.
Corrected head-of-household and QBI thresholds against IRS tables.
Fixed Android CSV/JSON exports, image attachments and local-data deletion confirmation.
Clearer planning limits, official sources and government-affiliation notices.