South Dakota Divorce and Social Security Benefits

Social Security benefits aren't divided in a divorce decree the way retirement accounts or pensions are. You can't assign a percentage of your ex's Social Security to yourself through a QDRO or settlement agreement — that's not how the federal system works. But if your marriage lasted at least 10 years, you may be eligible to claim benefits based on your ex-spouse's earnings record, and that eligibility has nothing to do with what your divorce decree says.

The 10-Year Rule for Ex-Spouse Benefits

Under federal Social Security rules, you can claim benefits on your ex-spouse's record if:

1. Your marriage lasted at least 10 years
2. You are at least 62 years old
3. You are currently unmarried — for benefits on a living ex-spouse's record, remarriage at any age ends eligibility (the remarriage-after-60 exception applies only to survivor benefits, covered below)
4. You are not entitled to a higher benefit on your own record
5. Your ex-spouse is entitled to or receiving Social Security benefits

The benefit amount is up to 50% of your ex-spouse's full retirement benefit (their Primary Insurance Amount at full retirement age). Claiming ex-spouse benefits does not reduce your ex's benefit or affect their current spouse's benefit — it's a completely independent entitlement.

Key facts most people miss:

• You don't need your ex's permission or cooperation to claim
• Your ex doesn't even need to know you're claiming
• If you've been divorced for at least two years and your ex is eligible (even if not yet collecting), you can claim independently
• If you remarry, you lose eligibility on a living ex's record — there is no after-60 exception for this benefit. If that later marriage also ends (divorce, annulment, or death), eligibility on the first ex's record may resume

Divorced-Survivor Benefits Follow Different Remarriage Rules

If your ex-spouse has died, you are in a separate category with more generous terms — this is where the age-60 rule actually lives:

• The marriage still must have lasted at least 10 years
• You can claim from age 60 (age 50 if you are disabled), not 62
• The benefit is up to 100% of what your deceased ex was receiving, not 50%
• Remarrying after age 60 does not disqualify you. Remarrying before 60 does — but eligibility can be restored if that marriage ends

The practical trap: someone whose ex is still alive remarries at 61 believing the after-60 exception protects them. It does not. That exception only applies once the ex has died.

How This Affects South Dakota Property Division

Social Security benefits cannot be divided as marital property — they're excluded from the equitable distribution calculus under SDCL 25-4-44. A judge cannot award you a "share" of your ex's Social Security the way they can divide a 401(k) or SDRS pension.

But Social Security eligibility is relevant to spousal support negotiations. If you're the lower-earning spouse approaching retirement, your expected Social Security benefit (including any ex-spouse benefit) factors into your post-divorce financial picture. Courts consider each spouse's future income-producing capacity when determining alimony — and Social Security is income.

Negotiation leverage: If you're 3-4 years short of the 10-year marriage threshold, this creates a powerful incentive to delay finalizing the divorce until you cross it. The difference between 9 years and 11 months versus 10 years and 1 day can be worth tens of thousands of dollars in lifetime benefits. South Dakota's 60-day waiting period and natural litigation timelines can bridge a short gap — but only if you're tracking the date.

The Social Security Fairness Act and WEP Repeal (2025)

The Social Security Fairness Act (H.R. 82), signed January 5, 2025, repealed both the Windfall Elimination Provision (WEP) and the Government Pension Offset (GPO). This matters enormously for South Dakota divorces involving public employees.

Before repeal: WEP and GPO were federal provisions that affected benefits for some people receiving pensions from employment not covered by Social Security, including some SDRS positions for teachers, law enforcement, and state workers.

After repeal: These federal offsets no longer apply to benefits payable January 2024 onward. Previously-offset beneficiaries should verify SSA's adjustment and retroactive pay back to January 2024. People who never applied because of the offsets must file a new claim rather than receiving an automatic award; eligible ex-spouses may claim without the GPO reduction.

Impact on existing divorce settlements: If your divorce was finalized before the repeal, and your spousal support calculations assumed an offset-adjusted benefit, the repeal represents a material change in financial circumstances. This may justify a modification petition under SDCL 25-4-41 — particularly if spousal support was set at a higher amount to compensate for an offset that no longer applies.

Planning Around Social Security

Social Security benefits are often overlooked in divorce financial planning because they can't be divided directly. But they represent significant lifetime income, especially for the lower-earning spouse:

• The ex-spouse benefit at full retirement age is half your ex's benefit. Against the 2026 maximum of $4,152/month for a worker retiring at full retirement age, that puts the ceiling at roughly $2,076/month — though reaching it assumes an ex-spouse who paid the maximum Social Security tax for 35 years, so most real claims land well below it
• Even at half that ceiling, a 20-year retirement is a quarter of a million dollars in income that requires no property division, no QDRO, and no cooperation from your ex
• Delaying your claim from 62 to full retirement age increases the benefit by approximately 30%

The South Dakota Divorce Financial Split Guide includes a retirement income projection worksheet that factors in Social Security (including ex-spouse benefits), SDRS pensions, and private retirement accounts to build a complete post-divorce financial picture.

See more South Dakota guides →