Updated for tax year 2026
Estimated Tax Calculator by State
Estimate federal, state, and local income tax for wages, bonuses, and RSUs, then compare the result with your withholding and plan quarterly payments.
Choose your 2026 location
Each page uses single-filer ordinary-income brackets and clearly links to its government rate source.
All high-tax jurisdictions covered
We define “high tax” as a 2026 top marginal rate of at least 8% on ordinary individual income. Under that objective definition, the complete list is California, Hawaii, Massachusetts, Minnesota, New Jersey, New York, Oregon, Vermont, and Washington, DC. Washington State is excluded because its 9% top rate applies to long-term capital gains rather than the wage, bonus, and RSU income modeled here.
What the estimate includes
- 2026 federal single-filer brackets and standard deduction
- State ordinary-income brackets and common single-filer allowance
- New York City resident income tax when selected
- 22% federal supplemental withholding up to $1 million
- 401(k), self-only HSA, and health FSA contributions
What to check before paying
Compare this planning estimate with your latest paystub and prior return. Credits, itemized deductions, filing status, investment income, payroll taxes, and safe-harbor rules are not fully modeled.
Review the official IRS estimated-tax guidance and Form 1040-ES before making a payment.
Estimated tax FAQ
Who should use an estimated tax calculator?
People whose withholding may not cover their full bill, including employees with bonuses or RSUs, freelancers, and people with other income, can use an estimate to plan cash flow and quarterly payments.
What counts as a high-tax state here?
For a complete and reproducible list, SnapSplit defines a high-tax jurisdiction as one with a 2026 top marginal rate of at least 8% on ordinary individual income. Washington's capital-gains-only tax is not included in that list.
Is this calculator a tax return or tax advice?
No. It is a planning estimate for a single filer using ordinary-income brackets and common deductions. Credits, itemized deductions, alternative minimum tax, payroll taxes, and special income rules can change the result.