An extension to file is not an extension to pay tax.
South Dakota does not impose an individual income tax or a general corporate income tax, so there is no income tax extension for most filers to request. The only income-based tax is the Bank Franchise Tax, which applies solely to financial institutions and is administered separately from a general corporate income tax regime.
| Item | Detail |
|---|---|
| Individual income tax | None |
| General corporate income tax | None |
| Bank Franchise Tax | Applies only to financial institutions; administered under SDCL ch. 10-43 |
| Authority | SDCL ch. 10-43 |