Indiana Tax Tables for 2018
The 2018 Indiana Tax Tables summarise the state-level rules applied to wages, deductions, credits and taxable income. These tables match the rules used by the Indiana State Tax Calculator 2018.
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Indiana Tax Tables for 2018
The tables below outline the income tax structure, deduction amounts, state-level credits and payroll-related rules used for Indiana in 2018. Indiana applies a flat income tax to this filing status. All taxable income is taxed at the same rate, with no marginal brackets. This table shows the single rate used in calculations. To understand how flat tax tables differ from progressive systems, see our Tax Tables guide.
Single – Flat Income Tax (2018)
A single flat tax rate applies to all taxable income for Single filers.
| Bracket | Range | Rate |
|---|---|---|
| 1 | 0 and over | 3.23% |
Married filing jointly – Flat Income Tax (2018)
A single flat tax rate applies to all taxable income for Married filing jointly filers.
| Bracket | Range | Rate |
|---|---|---|
| 1 | 0 and over | 3.23% |
Married filing separately – Flat Income Tax (2018)
A single flat tax rate applies to all taxable income for Married filing separately filers.
| Bracket | Range | Rate |
|---|---|---|
| 1 | 0 and over | 3.23% |
Head of household – Flat Income Tax (2018)
A single flat tax rate applies to all taxable income for Head of household filers.
| Bracket | Range | Rate |
|---|---|---|
| 1 | 0 and over | 3.23% |
Widowed – Flat Income Tax (2018)
A single flat tax rate applies to all taxable income for Widowed filers.
| Bracket | Range | Rate |
|---|---|---|
| 1 | 0 and over | 3.23% |
Indiana Standard Deduction(2018)
State-level standard deduction amounts for each filing status.
| Filing Status | Amount |
|---|---|
| Single | $0 |
| Married filing jointly | $0 |
| Married filing separately | $0 |
| Head of household | $0 |
| Widowed | $0 |
Indiana Tax Tables for Related Years
These related years are often reviewed together for comparing bracket changes, deductions and Indiana updates:
Frequently Asked Questions
Charitable gifts—do they help IN tax?
Itemized federal gifts don’t directly mirror into Indiana; state relief is usually via specific credits/deductions.
Multiple jobs—how to avoid under-withholding?
Use multi-job settings and consider extra Indiana (and county) withholding per pay period.
Education expenses—any IN credits?
Indiana offers specific credits/deductions; see the Credits section for 2018.
Do county rates apply to nonresidents?
County tax can apply to nonresidents working in an IN county (rules vary); select the correct county of employment.
Where is the Indiana calculator?
Indiana State Tax Calculator—set county, dependents, pre-tax, and credits.
Important Notes
All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.