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Oklahoma State Tax Calculator

The Oklahoma tax calculator is updated for the 2014/15 tax year. This tax calculator performs as a standalone State Tax calculator for Oklahoma, it does not take into account federal taxes, medicare decustions et al.

The Oklahoma tax calculator is designed to provide a simple illlustration of the state income tax due in Oklahoma, to view a comprehensive tax illustration which includes federal tax, medicare, state tax, standard/itemised deductions (and more), please use the main 2014/15 tax calculator.

Tax Calculator 2014/15 with Federal Tax, Oklahoma State Tax, Medicare, standard deductions and allowances

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Advanced Federal Tax Calculator


Federal Tax Calculator

Oklahoma State Tax Calculator

How to use the tax calculator

  1. Enter your annual income.
  2. Press Calculate to see your State tax and take home breakdown including Federal Tax deductions

How to use the advanced tax calculator

  1. Enter your Oklahoma State income.
  2. Check the box - Advanced Federal Tax Calculator
  3. Confirm Number of Dependants
  4. Confirm Number of Children you claim Tax Credits for
  5. Select other relevant tax factors (Age related tax allowances, head of household tax allowance, tax-deferred retirement plan, cafeteria etc)
  6. Click Calculate to see your tax, medicare and take home breakdown - Federal Tax made Simple


The Oklahoma State State Tax calculator is updated to include the latest Federal tax rates for 2015-16 tax year as published by the IRS.

The Oklahoma State State Tax calculator is updated to include the latest State tax rates for 2014-15 tax year and will be update to the 2015-16 State Tax Tables once fully published as published by the various States.

2015 Oklahoma State State Tax Refund Calculator

Calculate your total tax due using the tax calculator (update to include the 2015 tax brackets). Deduct the amount of tax paid from the tax calculation to provide an illustration of your 2015 tax refund.

Updates to the Oklahoma State State Tax Calculator

The following updates have been applied to the Tax calculator:

  • Selectable Tax year
  • Tax calculations allow for Tax-Deferred Retirement Plan
  • Tax calculations allow for Cafeteria or other Pre-Tax Plans
  • Selectable Tax year
  • Updated to include 2015 Federal tax rates
  • Updated to apply Medicare and Social Security deductions as Pre-Federal Tax calculation Thank you Justin Duel

The Oklahoma State State tax calculator is as good as the feedback, your support, requests and bug catches help to improve the accuracy of the tax calculator for all.

This Oklahoma State State tax calculator aims to balance ease of use with transparency of tax calculation but is provided for illustration only. Remember that you should always seek professional advice and audit your State and Federal tax returns