Oklahoma charges 0.25-4.75% state income tax. Use the overtime tax calculator pre-loaded with Oklahoma rates.
Open Overtime Tax Calculator →When you work overtime in Oklahoma, each extra hour is subject to federal supplemental withholding (typically 22%), FICA (7.65%), and Oklahoma's graduated rate (up to 4.75%) state tax. Without local income taxes, the state rate is the only additional layer. The overtime calculator shows you the real after-tax value of overtime work with Oklahoma rates, so you can decide whether extra hours are worth it.
Oklahoma uses a graduated income tax with brackets ranging from 0.25-4.75%. Lower income is taxed at lower rates, with the 4.75% top rate applying only to income in the highest bracket. This progressive structure means your effective state tax rate is always lower than the top marginal rate. Oklahoma does not have local income taxes, so the state graduated rate is the total state-level income tax burden.
The table below shows what you actually keep at five salary levels in Oklahoma, accounting for federal tax, FICA, and Oklahoma's graduated (0.25-4.75%) state tax.
See how Oklahoma compares to other South states. Each link takes you to the overtime tax calculator landing page for that state.
For a comprehensive breakdown of Oklahoma’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full Oklahoma take-home pay page.