South Dakota Medicare Savings Program Income Calculation: How DSS Counts Your Money
The income limits for South Dakota's Medicare Savings Programs look straightforward — $1,350 for QMB, $1,616 for SLMB, $1,816 for QI. But the number DSS actually compares against those limits isn't your gross income. It's your countable income after applying specific disregards, and the math trips up families who assume they're over the line.
The $20 General Income Disregard
DSS subtracts $20 from gross monthly unearned income before comparing against the threshold. Unearned income includes Social Security benefits, private pensions, annuities, VA pensions or disability, railroad retirement, and regular cash contributions from others.
This $20 disregard is mandatory — DSS applies it to every application. It means the effective gross income ceiling is $20 higher than the published countable income limit.
Example: A single senior in Aberdeen receives $1,370 in gross Social Security. Without the disregard, $1,370 exceeds the QMB limit of $1,350. After the $20 disregard, countable income is $1,350 — exactly at the threshold. DSS approves QMB.
Gross vs. Net: The Part B Deduction
SSA deducts the Part B premium ($202.90 in 2026) directly from the monthly Social Security check before depositing it. DSS uses the gross benefit — the amount before that deduction — not the net deposit.
Example: A senior receives a direct deposit of $1,147.10. Their gross Social Security benefit is $1,350 ($1,147.10 + $202.90). After the $20 disregard, countable income is $1,330. QMB approved.
Families who report the net deposit amount sometimes think their parent is well below the limit and are surprised when DSS asks for verification of the gross figure. The Social Security award letter shows the gross amount.
Earned Income Gets a Bigger Disregard
If the applicant or their spouse has earned income from a job, DSS applies a more generous disregard sequence:
- If any portion of the $20 general disregard wasn't used on unearned income (because unearned income was less than $20), apply the remainder to earned income
- Exclude the first $65 of gross monthly wages
- Exclude half of the remaining earned income
Example: A married couple in Rapid City. The husband (age 67, on Medicare) receives $1,500 in gross Social Security. The wife (age 62, not on Medicare) earns $500 at a part-time job.
- Unearned income: $1,500 − $20 disregard = $1,480 countable
- Earned income: $500 − $65 = $435 ÷ 2 = $217.50 countable
- Total countable couple income: $1,697.50
The 2026 QMB couple threshold is $1,824. This couple qualifies for QMB on the husband.
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What Counts as Income
DSS evaluates all sources of regular monthly income:
- Social Security retirement or disability benefits (gross, before any deductions)
- Private pension payments
- VA pension or disability compensation
- Railroad retirement benefits
- Annuity payments
- Regular cash contributions from family members or others
- Wages from employment (subject to the earned income disregard)
What Doesn't Count
Certain income types are excluded by federal and state rules:
- Income from Indian trust lands, treaty rights, or tribal distributions for enrolled members of federally recognized tribes
- The annual Social Security COLA increase is disregarded from January through approximately April each year while updated poverty guidelines take effect
- Retroactive Social Security lump-sum payments are excluded from income in the month received
The "I Make Too Much" Misconception
The most common mistake: a senior with $1,400 in gross Social Security assumes they don't qualify for anything. After the $20 disregard, countable income is $1,380 — over the QMB limit of $1,350, but well below the SLMB threshold of $1,616. SLMB would pay their entire Part B premium, saving $2,434.80 per year.
Even at $1,800 gross Social Security, countable income of $1,780 falls within the QI range (up to $1,816). The QI program covers the Part B premium on a first-come, first-served basis.
The South Dakota Medicare Savings Programs & Extra Help Guide includes a countable income calculation worksheet that walks through the disregard rules step by step, so families can determine which tier fits before submitting the application.
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