If you receive Social Security Disability Insurance (SSDI) and live in Kansas, you're dealing with two separate tax systems: federal and state. The rules are different at each level, and whether you owe anything — or nothing — depends on factors specific to your household.
Here's how both systems work.
The IRS taxes SSDI using a formula based on your combined income, not your SSDI amount alone. Combined income is calculated as:
Adjusted Gross Income + Nontaxable Interest + 50% of your SSDI benefits
Once you have that number, the IRS applies these thresholds:
| Filing Status | Combined Income | % of SSDI That May Be Taxable |
|---|---|---|
| Single | Below $25,000 | 0% |
| Single | $25,000–$34,000 | Up to 50% |
| Single | Above $34,000 | Up to 85% |
| Married Filing Jointly | Below $32,000 | 0% |
| Married Filing Jointly | $32,000–$44,000 | Up to 50% |
| Married Filing Jointly | Above $44,000 | Up to 85% |
A few important clarifications: up to 85% is the maximum portion of SSDI that can be taxed — not your tax rate. And these thresholds have not been adjusted for inflation since they were written into law, which means more recipients cross them over time as benefit amounts increase with annual cost-of-living adjustments (COLAs).
If SSDI is your only income, you are unlikely to reach these thresholds. But if you have a working spouse, pension income, investment income, or other earnings, the combined income calculation can push you into taxable territory quickly.
This is where Kansas residents get a significant break.
Kansas does not tax Social Security benefits at the state level. This includes SSDI. As of 2024, Kansas fully exempts Social Security and SSDI income from state income tax, regardless of your income level. You do not need to meet a specific income threshold to qualify for this exemption — it applies across the board.
This is a meaningful distinction. Several states have historically taxed Social Security or SSDI above certain income limits, but Kansas is not among them. If you file a Kansas state return, your SSDI income is simply not included in your Kansas taxable income.
That said, other income you receive is still subject to Kansas state income tax — wages, self-employment income, retirement distributions, and investment gains all count. SSDI being exempt doesn't shelter unrelated income.
The federal formula looks straightforward, but the variables that affect individual outcomes are numerous:
Filing status changes the thresholds significantly. A single person earning $26,000 in combined income hits the 50% range, while a married couple filing jointly wouldn't reach that tier until $32,001.
Other household income is the biggest driver. SSDI recipients who have a spouse with earned income, or who collect a pension alongside their disability benefit, are far more likely to owe federal taxes than someone relying solely on SSDI.
Back pay lump sums can complicate a tax year considerably. When SSA pays retroactive benefits covering multiple prior years in a single payment, the entire amount lands in one tax year by default. The IRS does offer a lump-sum election that allows recipients to recalculate taxes as if the payments had been received in the years they were owed — which can reduce the tax hit in some situations.
Medicare premiums paid out of SSDI can affect your net benefit but don't directly reduce your taxable SSDI income for federal purposes.
SSI vs. SSDI is worth noting here: Supplemental Security Income (SSI) is a separate program and is never federally taxable. SSDI is an earned-benefit program based on your work record and work credits, which is why it can be subject to income tax rules. If you receive both SSI and SSDI — sometimes called "concurrent benefits" — only the SSDI portion factors into the federal tax calculation.
The practical reality looks different depending on your profile:
The Kansas exemption is a fixed rule. The federal obligation is a moving target that changes year to year based on your total financial picture.
Even if you ultimately owe no tax, SSA sends Form SSA-1099 each January showing your total SSDI benefits for the prior year. You're still expected to include that information when preparing your federal return so that the combined income calculation can be completed accurately. Kansas does not require a separate reporting step for SSDI since it's fully exempt from state tax.
If you're uncertain how your combined income lands relative to federal thresholds — especially in a year when you received back pay, had significant other income, or changed filing status — the calculation is specific enough to your numbers that the difference between one outcome and another isn't something general guidance can resolve.
