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Home→Tools→Post-Death Tax Filing Guide→South Dakota

How Do I File Taxes for a Deceased Person in South Dakota?

Find out which tax returns you need to file after someone dies. See state-specific forms, deadlines, and whether tax clearance is required.

Frequently Asked Questions

Because South Dakota has no state income tax, the primary filing is the federal final income tax return (Form 1040) for income earned through the date of death.S.D. Const. Art. XI, § 15 (Amendment C, 2000; eff. 7/1/2001) (no inheritance tax); SD HB 1057 (2014) (repealed SDCL ch. 10-40, 10-40A, 10-41); no income tax enabling statuteVerified May 27, 2026 If the estate earns income during administration, a federal fiduciary return (Form 1041) may be required. No state income tax returns are needed.

The final federal income tax return is due April 15 of the year following death.S.D. Const. Art. XI, § 15 (Amendment C, 2000; eff. 7/1/2001) (no inheritance tax); SD HB 1057 (2014) (repealed SDCL ch. 10-40, 10-40A, 10-41); no income tax enabling statuteVerified May 27, 2026 Estate income tax returns (Form 1041) are due by the 15th day of the fourth month after the estate's tax year ends.

No. No state tax clearance required. South Dakota has no individual income tax (one of seven states with no income tax per dor.sd.gov), no inheritance tax (repealed by voters via Amendment C in 2000, codified at S.D. Const. Art. XI, § 15: "No tax may be levied on any inheritance, and the Legislature may not enact any law imposing such a tax" — effective for deaths on or after July 1, 2001), and no estate tax (SDCL ch. 10-40A pickup tax already $0 since EGTRRA federal credit phaseout in 2005; chapter formally repealed by HB 1057 (2014), signed February 12, 2014, effective July 1, 2014). South Dakota is one of the most favorable states for estate administration and is a popular trust situs.S.D. Const. Art. XI, § 15 (Amendment C, 2000; eff. 7/1/2001) (no inheritance tax); SD HB 1057 (2014) (repealed SDCL ch. 10-40, 10-40A, 10-41); no income tax enabling statuteVerified May 27, 2026 All tax obligations must be satisfied before making final distributions.

Yes. Estate size does not affect the requirement to file a final income tax return. A final Form 1040 is required regardless of estate value if the deceased had income. What smaller estates typically avoid is the federal estate tax return (Form 706).

The executor named in the will (or the court-appointed administrator) is responsible for filing the final income tax return and any estate tax returns. If the deceased was married, the surviving spouse can file a joint federal return for the year of death. For trust assets, the successor trustee handles fiduciary tax returns. The South Dakota executor checklist covers all filing responsibilities in order.

No. South Dakota does not impose a state estate tax or inheritance tax. The primary tax filings after death are income tax related (final return and, if applicable, estate income tax return). See how South Dakota compares with the death tax calculator.

Tax Filing After Death in South Dakota

South Dakota has no state income tax, which simplifies post-death tax filing. The primary obligation is the federal final income tax return (Form 1040) for income earned through the date of death.

With no state estate or inheritance tax, tax filing after death in South Dakota focuses on income tax obligations. This is a significant advantage compared to the handful of states that impose death taxes.

Filing deadlines depend on the type of return. Final income tax returns are generally due April 15 of the year following death. Estate tax returns, where applicable, are typically due nine months after the date of death. The South Dakota executor checklist tracks all deadlines in order.

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South Dakota Estate Planning Resources

In-depth guides covering South Dakota probate laws, trust requirements, and estate planning strategies.

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South Dakota Tax Filing Checklist

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Federal

File final income tax return26 USC 6012(b)(1)

A final federal income tax return is required for income earned from January 1 through the date of death.

Form: IRS Form 1040

Deadline: April 15 following year of death

Write "DECEASED" across the top. If filing jointly with surviving spouse, include both incomes. Attach Form 1310 if claiming a refund.
Download FormFile Online

File estate income tax returnNot required26 USC 6012(a)(4)

IRS Form 1041 is only required if the estate earns $600 in gross income or more during administration.

File estate tax returnNot required26 USC 6018; 26 USC 6075(a)

The estate value ($0) is below the federal exemption of $15,000,000. IRS Form 706 is generally not required.

South Dakota

Final income tax returnNot requiredS.D. Const. Art. XI, § 15 (Amendment C, 2000; eff. 7/1/2001) (no inheritance tax); SD HB 1057 (2014) (repealed SDCL ch. 10-40, 10-40A, 10-41); no income tax enabling statuteVerified May 27, 2026

South Dakota has no state income tax. No state income tax return is required.

Tax Clearance Not RequiredS.D. Const. Art. XI, § 15 (Amendment C, 2000; eff. 7/1/2001) (no inheritance tax); SD HB 1057 (2014) (repealed SDCL ch. 10-40, 10-40A, 10-41); no income tax enabling statuteVerified May 27, 2026

No state tax clearance required. South Dakota has no individual income tax (one of seven states with no income tax per dor.sd.gov), no inheritance tax (repealed by voters via Amendment C in 2000, codified at S.D. Const. Art. XI, § 15: "No tax may be levied on any inheritance, and the Legislature may not enact any law imposing such a tax" — effective for deaths on or after July 1, 2001), and no estate tax (SDCL ch. 10-40A pickup tax already $0 since EGTRRA federal credit phaseout in 2005; chapter formally repealed by HB 1057 (2014), signed February 12, 2014, effective July 1, 2014). South Dakota is one of the most favorable states for estate administration and is a popular trust situs.

This tool provides general information about tax filing requirements after death. Tax situations vary based on individual circumstances. Consult a licensed tax professional or CPA for advice specific to your situation.

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