Indiana Payroll: Employer Tax and Software Guide

Indiana has one of the simplest state income taxes in the country and one of the most misunderstood local ones, and the second fact matters far more to an employer than the first.

The state rate is a flat 2.95 percent for 2026, falling again to 2.90 percent in 2027 under a phase-down that has run since 2022. Nothing about that is difficult. Underneath it sits a county income tax levied by every single one of Indiana's 92 counties, with no exceptions, and it is keyed not to where the employee works but to where they lived on January 1 of the tax year.

That January 1 snapshot is what makes Indiana payroll distinctive. An employee who moves counties in March keeps their old county rate until the following January. A commuter who lives in Marion County and works in Hamilton has Marion tax withheld. And most paycheck calculators, including several that rank at the top of search results for Indiana payroll questions, do not model county rates at all. This guide covers what Indiana requires, what changed for 2026, and how 10 payroll providers price the work.

What Indiana requires from employers

A flat rate that keeps falling

Indiana replaced graduated brackets with a flat rate years ago and has been reducing it on a legislated schedule since 2022, subject to revenue conditions.

The practical consequence is that Indiana tables change every January without fail, and a platform running last year's figure over-withholds by a small amount that nobody notices until filing. Indiana does not use a standard deduction; the base is reduced by a $1,000 personal exemption per filer and $1,500 per qualifying dependent before the rate applies. Supplemental wages are withheld at the same 2.95 percent.

Unemployment insurance

The Department of Workforce Development publishes premium rates against a fixed wage base, with four reference points worth knowing.

Premiums are calculated on the first $9,500 of gross wages per employee per calendar year, a base that has been stable for over a decade. Most new employers hold the 2.50 percent rate for their first four calendar years rather than three, with rates determined as of June 30 each year for the following calendar year. Construction companies, government entities, and successor employers are assigned differently: construction pays the lesser of 4.0 percent or the industry average, government entities pay 1.6 percent unless they elect to reimburse, and a successor inherits the predecessor rate.

Quarterly wage reports and premium payments are due April 30, July 31, October 31, and January 31. Our guide to state unemployment tax covers how experience rating works.

The county tax and the January 1 rule

This is the part of Indiana payroll that has no close equivalent anywhere else, and it is worth understanding precisely because the mechanism is counterintuitive.

Read the second row against the third. County tax follows the residence for anyone living in Indiana. The work location only enters the calculation when the employee lives outside the state entirely, in which case the county of principal employment applies. This is the opposite of how municipal taxes work in states like Ohio and Alabama, where the worksite governs, and an employer with experience in those states will get Indiana backwards on instinct.

Six counties raised their rates effective January 1, 2026, including Carroll, Grant, Greene, and Howard. The Department of Revenue may adjust county rates in January and October, which means twice a year rather than annually, and the authoritative source is Departmental Notice Number 1 rather than any third-party table.

Form WH-4, filings, and reciprocity

Form WH-4

Form WH-4, State Form 48845, is the Employee's Withholding Exemption and County Status Certificate. Every Indiana employee completes it in addition to the federal W-4, and its second function is what makes it load-bearing: it is where the employee declares their county of residence and county of principal employment as of January 1.

The form was revised in August 2023 to add a one-time $3,000 dependent child exemption on Line 7 and a checkbox for reporting a county change. Employers keep completed forms on file rather than submitting them to the Department of Revenue, which means the county mapping in your payroll system is only as good as the forms in your records.

Filings and deadlines

The WH-1 return carries a county breakdown, so the county assignment does not merely affect what comes off the paycheck; it flows through to the return the employer files. A late WH-1 carries a penalty of up to 20 percent with a $5 minimum, and a late WH-3 costs $10 per document.

Reciprocity covers the state layer only

Indiana has reciprocity agreements with Kentucky, Michigan, Ohio, Pennsylvania, and Wisconsin, documented on Form WH-47. A resident of any of those five working in Indiana is exempt from Indiana state income tax withholding.

Wage rules and pay timing

Indiana's minimum wage has matched the federal $7.25 since July 2009 and the state preempts local wage ordinances, so there is no city-level variation to track. Overtime follows the federal Fair Labor Standards Act with no state addition, which our guide to overtime pay covers, and the tip credit rules are covered in our guide to the minimum wage for tipped employees.

The pay timing combination is worth noting: semimonthly minimum frequency rules out monthly payroll, and the ten-day rule limits how long after a period closes payment can be held. Final wages are due on the next regular payday regardless of how employment ended, and unused vacation is included where a written policy provides for it. Our guide to the final paycheck for a terminated employee covers how these rules differ elsewhere.

New hires are reported to the Indiana New Hire Reporting Center within 20 days, with a penalty of $25 per employee rising to $500 where employer and employee conspire to avoid reporting. Our guide to new hire reporting covers what each report must contain.

10 payroll providers for Indiana employers compared

Every provider below files Indiana state withholding and unemployment premiums. The differentiator here is narrower and more specific than in most states: how the platform handles county assignment, and in particular whether it applies the January 1 rule correctly rather than re-mapping on every address change.

OnPay

One plan at $49 per month plus $6 per employee, everything included, no tiers to climb. Local tax filing sits in the base plan rather than behind an upgrade. OnPay maintains an Indiana-specific tax rates resource, a reasonable proxy for whether a vendor keeps state and county tables current when the state rate changes every January and county rates can move twice a year.

Gusto

The most common first payroll purchase for US small businesses, with automatic tax filing, published pricing, and the strongest onboarding experience among payroll-first platforms. Simple runs $49 per month plus $6 per employee after a base increase in early 2026.

The single-state limit on Simple matters here because Indiana borders four states with reciprocity agreements, so cross-border employment is routine. One such hire moves you to Plus at $80 plus $12 per employee.

Patriot Software

The cheapest legitimate full-service payroll on the market. Full Service is $37 per month plus $5 per employee and includes federal, state, and local tax filing plus new hire reporting. Basic is $17 plus $4 if you file taxes yourself, which in Indiana means handling WH-1, WH-3, and the quarterly unemployment reports by hand.

Square Payroll

At $35 per month plus $6 per person, Square is the cheapest full-service option with published pricing, and the full-service plan covers federal, state, and local tax calculations, payments, and filings. For an Indianapolis or Fort Wayne restaurant already running Square point of sale, timecard data flows straight into payroll with no integration work.

SurePayroll

Owned by Paychex and built for very small employers and household employers. Full Service is $29 per month plus $7 per employee, with a flat $9.99 monthly multi-state fee rather than a per-state charge, which suits an Indiana employer with staff over one of the four reciprocity borders.

QuickBooks Workforce Payroll

Core is $50 per month plus $6.50 per employee, and the argument for it is unchanged: if your books live in QuickBooks Online, payroll reaches the general ledger without an export.

ADP RUN

ADP has the deepest tax compliance engine in the category, and Indiana is a state where that depth converts into value: 92 county rates that move twice a year, a residence-based assignment rule, and a reciprocity carve-out that applies to one layer but not the other are exactly the sort of complexity large platforms handle as routine.

The cost is opacity. ADP does not publish RUN pricing; third-party estimates put Essential near $79 per month plus $4 per employee, but every quote is individual. Contracts typically run a year with automatic renewal and a 30 to 60 day cancellation window.

Paychex Flex

Paychex competes on service rather than software, and unusually among quote-driven vendors it publishes an entry rate: Essentials at $39 per month plus $5 per employee, with higher tiers quoted individually. In Indiana the service model earns its keep when a county assignment question arises or a WH-1 does not reconcile.

Paylocity

Paylocity sits between small-business payroll and full HCM, aimed at companies that have outgrown basic payroll. It publishes detailed per-state tax facts including Indiana, and the HR module covers performance, learning, and engagement alongside payroll. Pricing is quote-based and implementation is a project rather than a signup.

Rippling

Rippling unifies payroll, HR, and IT provisioning on one employee record. The core platform is $35 per month plus $8 per employee, with payroll as a separate module. Real-world all-in costs land between $25 and $45 per employee per month once you assemble a working configuration.

What each provider actually costs an Indiana employer

The table below models published rates at three headcounts. Indiana is one of the states where these figures approximate the whole software cost, since there is no disability carrier, no paid leave remittance, and no employer-side local tax.

Square is the cheapest published option at every headcount, with Patriot and Paychex Essentials close behind. Gusto Simple is competitive until a hire across one of the four reciprocity borders forces the Plus tier, taking a 25-person payroll from $199 to $380 per month.

Choosing a payroll provider for Indiana

Before you choose

FirstHR does not process payroll, file payroll taxes, or administer benefits. Every provider above does something we do not, and in a state where county assignment drives the withholding, choosing a platform that handles that correctly is the most consequential decision on this page.

What we handle is the document layer that feeds payroll: onboarding workflows, e-signature on Form WH-4, I-9s, and offer letters, employee records that hold the county status the payroll system depends on, and document management for 5 to 50 employee US teams at a flat $98 to $198 per month. Two of the Indiana requirements above are record problems rather than payroll problems, namely collecting WH-4 with an accurate county declaration before the first payroll run, and filing the new hire report within twenty days. Our Indiana HR compliance guide covers the wider set of state obligations beyond payroll.

Frequently Asked Questions

What are the Indiana payroll taxes an employer has to handle?

Three plus federal: state income tax withholding at a flat 2.95 percent, county income tax withheld on top at rates set by each of the 92 counties, and unemployment insurance on the first $9,500 of wages at 2.50 percent for new employers. There is no state disability program and no paid family leave contribution. See our overview of payroll taxes by state for how this compares elsewhere.

What is the Indiana income tax rate?

A flat 2.95 percent for 2026, down from 3.00 percent, scheduled to fall to 2.90 percent in 2027 under the phase-down in House Enrolled Act 1001 subject to revenue conditions. Supplemental wages are withheld at the same rate. Indiana has no standard deduction; the base is reduced by a $1,000 personal exemption per filer plus $1,500 per dependent.

Do all Indiana counties have an income tax?

Yes, all 92 with no exceptions, applying to residents and to nonresidents who do not live in another Indiana county but work there. Each county has one rate that applies identically to both groups. Rates are published in Departmental Notice Number 1 and can change in January and October; six counties raised rates effective January 1, 2026.

Is Indiana county tax based on where an employee lives or works?

Where they lived on January 1 of the tax year. An employee living in Marion County and working in Hamilton County has Marion County tax withheld. The work county applies only when the employee lives outside Indiana entirely. Because the determination is a January 1 snapshot, a mid-year move does not change the rate until the following January.

What is Form WH-4 and why do Indiana employees need it?

State Form 48845, the Employee's Withholding Exemption and County Status Certificate, required alongside the federal W-4. It is where the employee declares county of residence and county of principal employment as of January 1, information the federal form does not collect. Revised in August 2023 to add a one-time $3,000 dependent child exemption and a county change checkbox. Employers keep it on file rather than submitting it.

What is the Indiana unemployment insurance wage base and rate?

Premiums apply to the first $9,500 of gross wages per employee per year. The published reference points are 0.50 percent minimum at $47.50 per employee, 2.50 percent for typical new employers at $237.50, 7.40 percent maximum in good standing at $703.00, and 9.40 percent delinquent at $902.50. New employers hold 2.50 percent for roughly four calendar years.

What is the minimum wage in Indiana?

$7.25, matching the federal rate and unchanged since July 2009, with a tipped cash wage of $2.13 and a training wage of $4.25 for employees under 20 during their first 90 days. Indiana preempts local wage ordinances, so no city or county sets a different rate.

How often must Indiana employers pay employees?

At least semimonthly, with biweekly available on employee request under Indiana Code 22-2-5-1(a), and wages paid within ten days after the pay period ends. Monthly payroll is not permitted. Final wages are due on the next regular payday whether the employee resigned or was terminated.

Which states have tax reciprocity with Indiana?

Kentucky, Michigan, Ohio, Pennsylvania, and Wisconsin, via Form WH-47. Residents of those five working in Indiana are exempt from Indiana state income tax withholding. Reciprocity does not extend to county tax, so a nonresident whose principal employment is in an Indiana county still owes that county's tax.