Washington Income Tax Brackets (Tax Year 2018)

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Federal Tax Reform: In December 2017, congress passed a sweeping federal income tax overhaul that affects personal income tax rates from tax year 2018 onward. This page shows the new federal tax brackets for tax year 2018, which will apply to personal tax returns filed in April 2019. The full text of the "2017 TAX CUTS AND JOBS ACT" can be found here

This page shows Tax-Brackets.org's archived Washington tax brackets for tax year 2018. This means that these brackets applied to all income earned in 2018, and the tax return that uses these tax rates was due in April 2019.

Both Washington's tax brackets and the associated tax rates have not been changed since at least 2001.

2019 Washington Tax Deduction Amounts

Tax-Brackets.org also maintains an archive of important Washington income tax exemption amounts, including the Washington Standard Deduction, the Washington Personal Exemption, and the Washington Dependent Deduction. The values of these deductions for tax year 2018 are as follows:

Sources & Citations

Disclaimer: While we do our best to keep our historical Washington income tax rates up to date and complete, we cannot be held liable for errors or omissions. Is info on this page missing or out-of-date? Please let us know so we can fix it!

Tax Data Sources:

1. The Washington tax brackets on this page sourced from the Washington Department of Revenue for 2019. Please contact us if any of our Washington tax data is incorrect or out of date.