E-file an IRS personal tax extension with TaxExtension.com
The State of South Dakota does not impose an individual income tax so there is no need to request a state tax extension for filing a personal tax return. If you received email confirmation from TaxExtension.com that your Federal tax extension was approved by the IRS, there is nothing else you have to do.
For additional information, please go to the South Dakota Department of Revenue website: dor.sd.gov