Calculators for irregular income.
Mainstream money apps assume a steady paycheck. These don't. Every Keldwell calculator runs entirely in your browser — your numbers are never stored or sent anywhere — and every tax figure is checked by a credentialed CPA.
Tax calculators
Figure out what to set aside, what you owe each quarter, and what's safe to spend.
Self-employed tax calculator
The core tool: what % of your income to set aside, your quarterly estimate, and your safe-to-spend number.
Quarterly tax calculator
Your four estimated-tax payments for the year, with the IRS deadlines built in.
1099 vs W-2 calculator
What a contract rate really needs to be to match a salary, after taxes and lost benefits.
Home office deduction
Estimate your deduction with both the simplified and actual-expense methods.
Gig & profession calculators
Tuned for delivery and rideshare work, with mileage and 1099 notes baked in.
DoorDash tax calculator
Set-aside estimate for Dashers, with the mileage deduction and 1099-NEC explained.
Uber & Lyft tax calculator
For rideshare drivers: read your 1099-K, deduct your miles, and set aside the right amount.
Any 1099 income
Freelancer, consultant, or creator? The self-employed calculator covers every kind of gig.
How these calculators work
Private by design
Everything runs in your browser. Nothing you type is stored, logged, or transmitted. Close the tab and it's gone.
Honest about simplifications
Each tool tells you exactly what it estimates and what it leaves out. They're a starting point, not a substitute for a CPA or the IRS.
Prefer to read first? Browse our plain-language guides to self-employment money.