# MultiW2

> Tax calculator for professionals with multiple W2 jobs

## What it does

MultiW2 calculates combined federal tax liability, Social Security overpayment, Medicare exposure, W-4 withholding adjustments, and quarterly estimated payments across 2-10 simultaneous W2 jobs. It catches multi-W2 tax traps that single-job calculators miss — like SS double-withholding (each employer withholds independently up to the wage base) and Additional Medicare Tax threshold crossing.

## URL

https://www.multiw2.com

## Pages

- https://www.multiw2.com — Landing page
- https://www.multiw2.com/pricing — Plans and pricing
- https://www.multiw2.com/tools — All six tools overview
- https://www.multiw2.com/tools/estimator-and-benefits — Tax Liability Estimation and Benefits Optimization overview
- https://www.multiw2.com/tools/estimate-tax-liability — Estimate Tax Liability tool deep-dive
- https://www.multiw2.com/tools/benefits-optimization — Benefits Optimization tool deep-dive with interactive demo

## Key features

- Combined federal tax calculation across all W2 jobs using 2026 IRS brackets and FICA rates
- Social Security overpayment detection (reclaimable at filing)
- Medicare Additional Tax calculation (0.9% above filing-status thresholds)
- W-4 withholding optimizer (per-job Line 4c recommendations)
- Quarterly estimated payment schedule with penalty risk assessment
- Tax scenario modeler (what-if: quit job, add job, change filing status, add 1099)
- Benefits optimizer (cross-employer 401k/HSA allocation)
- Year-end tax prep kit with safe harbor analysis
- AI-powered job compatibility scanner (6 scoring dimensions)
- Liability estimator with YTD projections from pay stubs

## Pricing

- Free: 3 jobs, exact W2 calculations, W2 data entry, liability estimator (±15%), 5 job scans/month
- Pro Quarterly: $19/quarter — 10 jobs, exact projections, all workflows, unlimited scans with web enrichment
- Pro Annual: $49/year — same as quarterly, save 35%

## Tech

Next.js 16, Supabase Postgres, Vercel AI Gateway, Resend email

## Not tax advice

MultiW2 is a tax planning and estimation tool. It is not a tax preparation service and does not file taxes. Consult a tax professional for filing decisions.