How SSA Calculates Substantial Gainful Activity

In 2026, substantial gainful activity generally means average monthly earnings above $1,690, or above $2,830 if you are statutorily blind, according to the table SSA's Office of the Chief Actuary publishes. But the monthly cap is only the last step of a calculation. SSA first builds your gross pay, subtracts certain deductions, and then averages uneven months before comparing anything to the threshold, all under 20 CFR 404.1574 and its averaging rules at 404.1574a.

The order of those steps matters. A paycheck that looks over the limit can test under it once subsidies and work expenses come out, and a stretch of rocky months can average out either way. Here is how the arithmetic actually works.

Step One: Start With Gross Wages

For employees, SSA's primary consideration is the earnings you derive from the work, under 20 CFR 404.1574(a). The starting figure is gross pay, everything the job pays you before taxes and payroll deductions.

That includes the parts people forget. Overtime premiums and tips are earnings from the work, so they belong in the gross figure. So does pay from a job with reduced duties, which is where the deductions in the next step do their work.

Step Two: Subtract Subsidies and Work Expenses

Two deductions come out of gross pay before any comparison with the guideline, as 20 CFR 404.1574(b)(1) directs.

The first is subsidy. Under 404.1574(a)(2), SSA counts only the amounts you actually earn. When your pay exceeds the reasonable value of your work, measured against what unimpaired people are paid for the same or similar work, the excess is a subsidy and comes off the top. A sympathetic employer paying full wages for sharply reduced output is the classic example, and sheltered or special work environments get the same scrutiny under 404.1574(a)(3).

The second is impairment-related work expenses, governed by 20 CFR 404.1576. The reasonable cost of things you need in order to work, such as medication, medical devices, or specialized transportation, is subtracted as long as you pay for it because of your impairment.

What remains is called your countable earnings. For a simple example, take 2026 gross monthly wages of $1,850, a $150 subsidy, and $200 in impairment-related work expenses. Countable earnings are $1,500, which is under the $1,690 guideline for a non-blind applicant.

Step Three: Average the Months

SSA does not read one bad month in isolation. Under 20 CFR 404.1574(b)(1), earnings are generally averaged for comparison with the guideline, and the mechanics live at 404.1574a.

Averaging works in both directions. Months of $2,150 followed by months of $1,150 average to $1,650, under the 2026 cap despite the strong start. The same math means a low month can be pulled up by a strong one. For seasonal and on-call workers, the averaging rules are usually what decides the question.

Raises are handled inside this arithmetic. A raise changes what you earn going forward, and averaging across the months being evaluated smooths the transition, so the comparison reflects the period as a whole rather than the newest paycheck alone. Overtime spikes get the same smoothing treatment.

Step Four: Compare With the Guideline

The comparison itself runs under 20 CFR 404.1574(b)(2) and (b)(3). Countable earnings averaging more than the guideline ordinarily show substantial gainful activity, and earnings at or below it ordinarily show the opposite.

The word ordinarily is doing work. Under 404.1574(b)(3)(ii), SSA may look past the raw numbers when there is evidence you control when or how much you are paid, the example in the regulation being a small corporation owned by a relative. In those situations the agency can compare your work with what unimpaired people in your community do in the same or similar jobs, considering time, energy, skill, and responsibility.

Unsuccessful Work Attempts

The unsuccessful work attempt rules at 20 CFR 404.1574(c) can neutralize a short stretch of work entirely. Work of 6 months or less that you were forced to stop, or to cut below the SGA level because of your impairment, does not show ability to do substantial gainful activity.

The rule needs a significant break in the continuity of your work first. Under the regulation, that generally means at least 30 consecutive days out of work, or being forced by the impairment to change to another type of work or another employer. The impairment, not frustration or scheduling, must be what ended the attempt. Work at the SGA level lasting more than 6 months does not qualify, regardless of why it ended.

A Different Arithmetic for the Self-Employed

Self-employed claimants are not judged on income alone, because income can reflect capital, debt, and profit-sharing rather than personal productivity. Under 20 CFR 404.1575(a)(2), SSA considers your activities and their value to the business, applying three tests in order.

Test one asks whether you render significant services and receive substantial income. Services are significant, under 404.1575(b)(1), if you contribute more than half the total time needed to manage the business, or if you render management services for more than 45 hours a month.

The income side of test one uses countable income computed under 404.1575(c)(1): gross income minus normal business expenses to get net income, then deductions for the reasonable value of unpaid help from family, impairment-related work expenses, and unincurred business expenses paid on your behalf by another person or agency. Countable income is substantial if it averages more than the 404.1574(b)(2) guideline amounts, or if it is comparable to what it was before you became seriously impaired or to what unimpaired self-employed people in your community earn in the same kind of business.

Tests two and three only apply if test one fails. Test two, at 404.1575(a)(2)(ii), asks whether your work activity in hours, skills, energy, efficiency, duties, and responsibility is comparable to that of unimpaired people in your community in the same or similar business. Test three asks whether the work, even if not comparable, is clearly worth what the guideline amounts say, measured by its value to the business or by what an owner would pay an employee to do it.

The Blind Applicant Difference

Statutory blindness, defined at 20 CFR 404.1581, carries the higher 2026 threshold of $2,830 per month. SSA's Office of the Chief Actuary, which publishes the annual table, also notes that the blind SGA level applies to Social Security disability claims and does not apply to SSI, while the non-blind level applies to both programs.

Putting It Together

The full calculation, then, runs: total gross pay including tips and overtime, minus subsidy, minus impairment-related work expenses, averaged over the period of work being evaluated, then compared with the 2026 guideline of $1,690 or $2,830. Self-employed claimants swap in the three-test analysis of 404.1575, and a qualifying unsuccessful work attempt can drop out of the picture altogether.

None of this is tax accounting. Take-home pay, and what the tax code counts as income, are not the measure. The regulation measures what your work actually earns you, which is why documenting subsidies and work expenses is often worth more to an SGA question than any other step you can take.

Frequently Asked Questions

Does SSA use gross or net pay for the SGA test?

Neither take-home pay nor taxable income is the measure. Under 20 CFR 404.1574(b)(1), SSA starts with gross wages, subtracts the value of any subsidy and the reasonable cost of impairment-related work expenses, and then averages the remainder to compare with the guideline.

How does SSA handle months where my pay jumps around?

SSA generally averages earnings over the period of work it is evaluating, under the averaging rules at 20 CFR 404.1574a, so one strong overtime month does not automatically put you over the cap for the whole period.

Do tips and overtime count toward substantial gainful activity?

Yes. The test measures all the earnings you derive from the work under 20 CFR 404.1574(a), so tips and overtime are part of the starting figure before deductions and averaging are applied.

This article is general information about SSDI eligibility rules, not legal advice. Social Security rules and dollar amounts change, and the earnings figures here reflect 2026. For advice about your own situation, consult a qualified representative or contact SSA directly.