Indiana business filing due dates
The Indiana deadlines Ordexly tracks for Oct 2026 to Oct 2027. Every date links to the agency page it was checked against (last checked ). Which ones apply to a business depends on its registrations and filing frequency, so confirm with the agency.
Annual report based on formation date
Indiana Business Entity Report (biennial anniversary). Indiana for-profit business entity report: first due two years after formation, then every other year; due in the anniversary month, past due after the end of that month (INBiz; IC 23-0.5-2-13). Ordexly shows the last weekday of the anniversary month. Official source.
Ordexly works out this date for each business from its formation month.
Sales & use tax
| Due | Deadline | Source |
|---|---|---|
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) September 2026 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) October 2026 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) October 2026 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) November 2026 Moved from Sun, Dec 20 (weekend). | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) November 2026 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) December 2026 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) December 2026 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) January 2027 Moved from Sat, Feb 20 (weekend). | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) January 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) February 2027 Moved from Sat, Mar 20 (weekend). | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) February 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) March 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) March 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) April 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) April 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) May 2027 Moved from Sun, Jun 20 (weekend). | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) May 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) June 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) June 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) July 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) July 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) August 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax $1,000 or less) August 2027 | official source | |
| Indiana ST-103 sales tax return (monthly, avg. monthly tax over $1,000) September 2027 | official source |
Payroll & withholding
| Due | Deadline | Source |
|---|---|---|
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Sep 2026 | official source | |
| Indiana WH-1 Withholding (quarterly filers) (quarterly) Q3 2026 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Oct 2026 | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Oct 2026 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Nov 2026 Moved from Sun, Dec 20 (weekend). | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Nov 2026 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Dec 2026 | official source | |
| Indiana WH-1 Withholding (annual filers) (annual) 2026 | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Dec 2026 | official source | |
| Indiana WH-1 Withholding (quarterly filers) (quarterly) Q4 2026 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Jan 2027 Moved from Sat, Feb 20 (weekend). | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Jan 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Feb 2027 Moved from Sat, Mar 20 (weekend). | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Feb 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Mar 2027 | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Mar 2027 | official source | |
| Indiana WH-1 Withholding (quarterly filers) (quarterly) Q1 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Apr 2027 | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Apr 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) May 2027 Moved from Sun, Jun 20 (weekend). | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) May 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Jun 2027 | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Jun 2027 | official source | |
| Indiana WH-1 Withholding (quarterly filers) (quarterly) Q2 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Jul 2027 | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Jul 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Aug 2027 | official source | |
| Indiana WH-1 Withholding (monthly filers, under $1,000/mo) (monthly) Aug 2027 | official source | |
| Indiana WH-1 Withholding (early filers, over $1,000/mo) (monthly) Sep 2027 | official source |
Unemployment / reemployment
| Due | Deadline | Source |
|---|---|---|
| Indiana DWD unemployment wage report (quarterly) Q3 2026 | official source | |
| Indiana DWD unemployment wage report (quarterly) Q4 2026 | official source | |
| Indiana DWD unemployment wage report (quarterly) Q1 2027 | official source | |
| Indiana DWD unemployment wage report (quarterly) Q2 2027 | official source |
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