Every calculator, guide, and checklist a 1099 worker needs for tax season. No ads, no signup, no upsells — just the math.
Open Tax Season Checklist →Calculate your exact self-employment tax using the IRS formula. Shows SE tax (SS + Medicare), the half-SE deduction, 2024 federal income tax brackets, effective rate, take-home pay, and quarterly estimated payment.
Σ Shows workCalculate your estimated quarterly tax payments as a freelancer or 1099 contractor. Covers self-employment tax, federal income tax by bracket, state tax, and IRS safe harbor rules.
Σ Shows workCalculate the exact quarterly estimated tax payment to avoid the IRS underpayment penalty. Computes both safe harbor methods — 100%/110% of prior year tax vs 90% of current year — recommends the lower one, and shows your per-quarter payment schedule.
Σ Shows workSame gross pay, wildly different take-home. See exactly how W-2 and 1099 offers compare after self-employment tax, FICA, and employer benefits — then get the break-even number that tells you exactly what to negotiate.
Σ Shows workFormula
breakEven = 1099 gross that matches W-2 total value incl. benefits
Compare IRS Simplified ($5/sq ft, max $1,500) vs Regular/Form 8829 side by side. Enter rent or mortgage expenses, see both deductions, the winner, tax savings at your rate, and quarterly payment reduction.
Σ Shows work2024 IRS mileage rates: $0.67/mi business, $0.21/mi medical, $0.14/mi charity. Split your miles by purpose, compare standard rate vs actual expenses (gas, insurance, depreciation, maintenance), and see your tax savings and quarterly payment reduction.
Σ Shows workCalculate your 2024 business meal deduction under TCJA 2017 rules. 50% for documented client/team meals, 100% for on-premises employer meals, 50% for office snacks. Covers the entertainment-vs-meal distinction, IRC §274(d) documentation requirements, and your quarterly tax savings.
Σ Shows workCalculate your Form 1040 Line 17 health insurance deduction as a self-employed person. Covers health, dental, vision, and LTC premiums. Shows deduction cap at net SE income, federal and state tax savings, and effective monthly premium cost after the government subsidy.
Σ Shows workSide-by-side comparison of SEP-IRA, Solo 401(k), SIMPLE IRA, and Traditional IRA for 1099 workers. Enter your net SE income to see max contribution, immediate tax savings, projected balance at retirement, and monthly income at 4% withdrawal — for all four accounts simultaneously.
Σ Shows workEstimate your 2024 federal income tax, effective rate, and refund or amount owed. Includes bracket breakdown, itemized deductions, and withholding analysis.
Σ Shows workVisual, educational tool showing exactly how 2024 federal tax brackets work. Stacked bar chart for each bracket, effective vs marginal rate, pre-tax deductions, and the bracket bump myth — busted with the math shown.
Σ Shows workFormula
tax = Σ(dollars_in_each_bracket × bracket_rate)
Find out if PayPal, Venmo, Stripe, Etsy, or Square will send you a 1099-K. Enter income per platform, see which cross the IRS threshold ($5,000 in 2024, $2,500 in 2025, $600 in 2026+), and get your SE tax estimate regardless of the form.
Σ Shows workSole Prop vs LLC vs S-Corp: the biggest financial decision a new contractor faces. See SE tax burden, formation cost, complexity, and exact savings side-by-side — with the break-even threshold for your situation.
Σ Shows workInteractive tax season checklist for freelancers and 1099 workers. Income documents (1099-NEC, 1099-K), deductible expenses, estimated tax payments, required forms (Schedule C, SE, 8829), and W-9/contractor records. Check off items, track progress %, copy as text.
Σ Shows workInteractive checklist: income documents, deductible expenses, estimated tax payments, required forms, and W-9 records. Check off items, track progress, copy as text.
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