School districts across the country cannot find enough bus drivers. Superintendents have leaned on retirees for years, waiving fees, paying for the commercial license, and building schedules around morning and afternoon routes. For a man in his mid-60s who claimed Social Security early, the offer arrives when boredom, rising costs, and grandkids in the back seat all point the same direction. The wages look useful. The question is whether they stay useful once Social Security’s rules take their cut.
This is a familiar spot. Baby Boomers report a median retirement savings of $270,000, and average annual household expenditures hit $78,535 in 2024. A part-time paycheck closes real gaps. It also collides with a rule most early claimers underestimate.
The Earnings Test Reshapes the Paycheck
If you claimed Social Security before your full retirement age (FRA) and keep working, Social Security withholds $1 in benefits for every $2 you earn above an annual limit. For 2026, that limit is $24,480. The threshold is indexed to the CPI-W, the same inflation gauge that drives the annual COLA, so it drifts up each year.
Say his Social Security check is $1,800 a month, or $21,600 a year. He earns $30,000 driving a route. That is $5,520 over the limit. Social Security withholds half of the overage, roughly $2,760, by pausing several months of benefits until the withholding is satisfied. His household still comes out ahead because he added $30,000 in wages and only gave back $2,760 in benefits. What surprises people is the pause itself. Checks stop for a few months, then resume, and the reaction is often, “Did I make a mistake?”
He did not. Withheld benefits are deferred, not lost. Once he reaches FRA, which is 67 for anyone born in 1960 or later, Social Security recalculates his monthly benefit upward to give credit for the months it withheld. The earnings test also disappears at that point, so wages and benefits stop interfering with each other.
Taxes Are the Quieter Cost
Adding wages raises what the IRS calls provisional income, and it determines how much of his Social Security benefit becomes taxable. For a single filer, once provisional income clears $25,000, up to half the benefit is taxable. Above $34,000, up to 85% is. For a married couple filing jointly, those thresholds are $32,000 and $44,000. Those thresholds have not been adjusted for inflation in decades, so almost any part-time job pushes a retiree into the taxable zone.
A $30,000 bus-driving job does not add $30,000 to spendable income. Payroll taxes come out, federal income tax applies, and a larger slice of his Social Security check gets taxed too. A rough working assumption is that 15% to 25% of the gross wage disappears before it reaches the checking account, depending on state tax and other income.
How It Fits With the Rest of the Picture
Two interactions deserve attention. First, retirement income he may already have coming in, like a pension from a previous job, a 401(k), or an IRA, does not count toward the earnings test at all. Only current wages and self-employment income do, and that includes his own pension contributions withheld from this new paycheck, since those are still part of his gross wages. Second, the 2.8% Social Security cost-of-living adjustment (COLA) for 2026 applies to his benefit whether he is working or not, so the base check keeps its purchasing power in the background.
Working can also delay tapping an IRA or 401(k). Every dollar left invested keeps compounding, and drawing less now leaves more room later when required minimum distributions kick in at 73.
What to Think Through Before Signing On
Three questions are worth answering before he says yes.
- Estimate wages against the annual limit before you accept the schedule. If he can stay near or under $24,480, the earnings test never triggers. A route or two fewer per week can be worth more than the extra pay.
- Do a rough tax check with last year’s return. Add the expected wages, then look at whether more of the Social Security benefit becomes taxable and whether the household jumps a bracket.
- Treat the withholding as deferral. Benefits paused today come back as a higher monthly check at FRA, and the math is designed to be roughly fair over a normal lifespan.
Every household’s numbers land differently. State taxes, Medicare premiums tied to income, or a spouse’s earnings can tilt the answer. The bus-driving job can absolutely be worth it. It just needs to be evaluated on the take-home number, not the hourly rate on the flyer.
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