This free Indiana sales tax calculator starts from the state's 7% base rate. Add tax to a net price, or work backwards from a tax-inclusive total. Three other states share the 7% rate: Mississippi, Rhode Island and Tennessee.
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State base rate verified October 2026 · Source: Tax Foundation, 2026 sales tax rates (midyear)
Whether you are a seller working out what to charge or a buyer checking a receipt, the split matters: net, tax, total. Get any one of them wrong and either you absorb the tax or your customer disputes the invoice. This calculator shows all three instantly, both ways — adding tax to a net price and extracting it from a gross total.
See all 50 states plus DC, try the tax calculator for any rate, or put the result on a free invoice. More state calculators: Illinois · Iowa.