Missouri Tax Calculator 2026
Missouri currently uses a flat state income tax rate of 4.70%.
MO
Missouri state income tax estimator for filing year 2026
Use this page to estimate your 2026 state tax filing for Missouri. The calculator pre-selects Missouri and applies the flat-tax structure so you can model withholding and net owed/refund faster.
Missouri tax profile snapshot
- State: Missouri (MO)
- Filing year: 2026
- Tax year data applied: 2025
- Missouri currently uses a flat state income tax rate of 4.70%.
Need federal and state in one view?
Use the full Tax Calculators page for side-by-side federal and state workflows.
Frequently asked questions
Does Missouri have state income tax for filing year 2026?
Yes. Missouri applies state income tax rules in the current dataset for tax year 2025.
What Missouri rate assumptions are used on this page?
Missouri is modeled with a flat rate of 4.70%.
Should I use this page or the main tax calculator?
Use this page for a state-specific workflow preloaded to one state and year. Use the main tax calculator if you need both federal and state tabs together or want to switch states quickly.