Iowa Income Tax Table 2015 Iowa Income Tax Brackets

Iowa - Single Tax Brackets
Tax Bracket Tax Rate
$0.00+ 0.36%
$1,554.00+ 0.72%
$3,108.00+ 2.43%
$6,216.00+ 4.5%
$13,896.00+ 6.12%
$23,310.00+ 6.48%
$31,080.00+ 6.8%
$46,620.00+ 7.92%
Iowa - Married Filing Jointly Tax Brackets
Tax Bracket Tax Rate
$0.00+ 0.36%
$1,554.00+ 0.72%
$3,108.00+ 2.43%
$6,216.00+ 4.5%
$13,896.00+ 6.12%
$23,310.00+ 6.48%
$31,080.00+ 6.8%
$46,620.00+ 7.92%

Iowa's income tax brackets were last changed one year ago for tax year 2014, and the tax rates have not been changed since at least 2001. Iowa's tax brackets are indexed for inflation, and are updated yearly to reflect changes in cost of living.

Iowa has nine marginal tax brackets, ranging from 0.36% (the lowest Iowa tax bracket) to 8.98% (the highest Iowa tax bracket). Each marginal rate only applies to earnings within the applicable marginal tax bracket , which are the same in Iowa for single filers and couples filing jointly.

The Federal Income Tax, by contrast, has different tax brackets for Single, Married Filing Jointly, and Head of Household taxpayers.

How do Iowa tax brackets work?

Technically, you don't have just one "tax bracket" - you pay all of the Iowa marginal tax rates from the lowest tax bracket to the tax bracket in which you earned your last dollar. For comparison purposes, however, your Iowa tax bracket is the tax bracket in which your last earned dollar in any given tax period falls.

You can think of the bracketed income tax as a flat amount for all of the money you earned up to your highest tax bracket, plus a marginal percentage of any amount you earned over that. The chart below breaks down the Iowa tax brackets using this model:

For earnings between $0.00 and $1,554.00, you'll pay 0.36%
For earnings between $1,554.00 and $3,108.00, you'll pay 0.72% plus $5.59
For earnings between $3,108.00 and $6,216.00, you'll pay 2.43% plus $16.78
For earnings between $6,216.00 and $13,896.00, you'll pay 4.5% plus $92.31
For earnings between $13,896.00 and $23,310.00, you'll pay 6.12% plus $437.91
For earnings between $23,310.00 and $31,080.00, you'll pay 6.48% plus $1,014.04
For earnings between $31,080.00 and $46,620.00, you'll pay 6.8% plus $1,517.54
For earnings between $46,620.00 and $69,930.00, you'll pay 7.92% plus $2,574.26
For earnings over $69,930.00, you'll pay 8.98% plus $4,420.41
For earnings between $0.00 and $1,554.00, you'll pay 0.36%
For earnings between $1,554.00 and $3,108.00, you'll pay 0.72% plus $5.59
For earnings between $3,108.00 and $6,216.00, you'll pay 2.43% plus $16.78
For earnings between $6,216.00 and $13,896.00, you'll pay 4.5% plus $92.31
For earnings between $13,896.00 and $23,310.00, you'll pay 6.12% plus $437.91
For earnings between $23,310.00 and $31,080.00, you'll pay 6.48% plus $1,014.04
For earnings between $31,080.00 and $46,620.00, you'll pay 6.8% plus $1,517.54
For earnings between $46,620.00 and $69,930.00, you'll pay 7.92% plus $2,574.26
For earnings over $69,930.00, you'll pay 8.98% plus $4,420.41

Iowa Income Tax Calculator Iowa Income Tax Calculator


Iowa Income Tax Estimator

You can use the income tax estimator to the left to calculate your approximate Iowa and Federal income tax based on the most recent tax brackets.

Keep in mind that this estimator assumes all income is from wages, assumes the standard deduction, and does not account for tax credits.

For a more detailed estimate that takes these factors into account, click "View Detailed Estimate" (this will will redirect to an external website).

Iowa Tax Deductions

When calculating your Iowa income tax, keep in mind that the Iowa state income tax brackets are only applied to your adjusted gross income (AGI) after you have made any qualifying deductions.

Qualifying deductions might include an itemized deduction, the Iowa standard deduction, exemptions for dependants, business expenses, etc.

Remember that Iowa may have very different deduction laws from the Federal Income Tax, so you may have to write a whole new list of deductions for your Iowa income tax return.


Download the Iowa tax table for Excel or database applications

Download .CSV file of IA income tax brackets

Download tax forms

Download or print Iowa income tax forms

Iowa Standard Deductions & Personal Exemption Amounts


In addition to marginal tax brackets, one of the major features of the Iowa income tax is deductions. The three most common deductions encountered by taxpayers are the Iowa Standard Deduction, the Iowa Personal Exemption, and the Iowa Dependent Deduction. The current values of these deductions for tax year 2015 are as follows:

Standard Deduction (Single) Standard Deduction (MFJ) Personal Exemption Dependant Exemption
$1,970.00 $4,860.00 $40.00 * $40.00 *
* Note: Iowa is different from other states in that it treats personal exemptions state tax exemptions as tax credits - which means that instead of deducting an amount from taxable income, the exemptions reduce your actual tax liability after it has been calculated.

The standard deduction, which Iowa has, is a deduction that is available by default to all taxpayers who do not instead choose to file an itemized deduction.

The Personal Exemption, which is supported by the Iowa income tax, is an additional deduction you can take if you (and not someone else) are primarily responsible for your own living expenses. Likewise, you can take an additional dependent exemption for each qualifying dependent (like a child or family member), who you financially support.

The Federal income tax also has a standard deduction, personal exemptions, and dependant deductions, though they are different amounts than Iowa's and may have different rules.

Head over to the Federal income tax brackets page to learn about the Federal Income Tax, which applies in all states nationwide.

Iowa Income Tax Rate 2015 Sources & Citations

Disclaimer: While we do our best to keep this list of Iowa 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!

These IA income tax rates are updated for 2015 / 2016 The Iowa tax brackets on this page have been updated for tax year 2015, and are the latest brackets available. States often adjust their tax brackets on a yearly basis, so make sure to check back later for Iowa's updated tax year 2016 tax brackets!


Tax Data Sources:

  1. The Iowa tax brackets on this page were last updated from the Iowa Department of Revenue in 2015. Please contact us if any of our Iowa tax data is incorrect or out of date.
  2. Iowa tax return forms are available on the Iowa tax forms page or the Iowa Department of Revenue.
  3. Before the official 2016 Iowa income tax brackets are released, the brackets used on this page are an estimate based on the previous year's brackets. These numbers are subject to change if new Iowa tax tables are released.
  4. The Iowa income tax estimator tool is provided by Tax-Rates.org .

** This Document Provided By Tax-Brackets.org **
Source: http://www.tax-brackets.org/iowataxtable