Not Your Imagination: Here’s Why Your Paycheck Shrank in January

If you've been staring at your paycheck deposit trying to figure out why the amount seems lower, you're not imagining things. The take-home amount an employee receives is lower at the start of 2026 than it was at the end of 2025

"The primary driver is the Social Security tax reset," Chad Cummings, CPA and attorney with Cummings & Cummings Law, tells Realtor.com®. "Social Security tax applies to wages up to a cap that resets each calendar year. That's the big one."

A percentage of an employee's pay goes to Social Security. The current tax rate for Social Security is 6.2% for the employer and 6.2% for the employee, or 12.4% total.

But only the Social Security tax has a wage base limit. The wage base limit is the maximum wage that's subject to the tax for that year. For earnings in 2026, this wage base limit is $184,500, according to the Internal Revenue Service. In 2025, that limit was $176,100.

This means once an employee earns the limit for the calendar year, Social Security taxes stop coming out of the paycheck for the remainder of the year.

"In December, high earners who already hit that cap stopped paying the 6.2% tax on wages above the limit months earlier," Cummings explains. "On Jan. 1, the clock restarts, and every dollar of wages again faces the 6.2% withholding from the first paycheck forward."

That's why paychecks to start the year look smaller than those toward the end of the year for some.

Taxing matters

High earners will feel the biggest pinch in their paychecks. If someone is making about $200,000 a year, they may reach the maximum wage base limit sometime in the fall—leaving their December, and maybe even November, paychecks higher since Social Security taxes are no longer being deducted.

But Social Security isn't the only factor.

"Most employers reset 401(k) elective deferrals to default rates in January, which means employees who reduced or paused contributions late in the prior year after hitting the $23,500 limit for 2025 now see fresh deductions from Dollar One," says Cummings.

Health insurance premiums for employer-sponsored plans often increase at the January renewal.

Cummings says employees who elected new FSA (flexible spending account) or HSA (health savings account) contribution levels during open enrollment in November will see those revised withholdings begin in January.

"HSA contribution limits for 2025 were $4,300 for individual coverage and $8,550 for family coverage, and 2026 will see increases," Cummings says.

The IRS says hospital insurance taxes, also known as Medicare taxes, are another deduction. The current rate for Medicare is 1.45% for the employer and 1.45% for the employee, or 2.9% total.

Additional Medicare tax applies to an individual's Medicare wages that exceed a threshold amount based on the taxpayer's filing status. Employers are responsible for withholding the 0.9% additional Medicare tax on an individual's wages paid in excess of $200,000 in a calendar year, without regard to filing status.

If you want to figure out when your paycheck will see a boost once again, Cummings offers a suggestion: "Employees who earn above the Social Security wage base can calculate the exact pay period when their checks will increase by dividing the $181,800 cap by their per-period gross wages. Until that period arrives, every check carries the full 6.2% hit."