What a Raise Actually Costs Your Employer (It's Not Just the Raise)

You ask for a $5,000 raise. Your manager doesn't say yes or no on the spot — they say they'll "run the numbers." That phrase is not a stall tactic. A $5,000 raise does not cost your employer $5,000. It costs more, because your employer pays a matching share of FICA on every dollar of your salary, including the new dollars from your raise.

Understanding that number doesn't change what you're owed. But it explains why a raise request goes through a budget conversation instead of a quick approval, and it's the same math the Cost of a Salary Increase Calculator runs for any salary and raise amount you enter.

What Employer FICA Actually Is

FICA — the Federal Insurance Contributions Act — is usually explained from your side: 6.2% Social Security and 1.45% Medicare come out of your paycheck. What's less visible is that your employer pays the same two rates on top of your wages, separately from what's withheld from you. Per IRS Topic 751: "The current tax rate for Social Security is 6.2% for the employer and 6.2% for the employee, or 12.4% total," and "The current rate for Medicare is 1.45% for the employer and 1.45% for the employee, or 2.9% total."

That employer share isn't withheld from anything. It's an additional cost your employer pays out of the business's own funds, on top of your gross wages. On a $70,000 salary, the employer's FICA match is $4,340 in Social Security (6.2% of $70,000) plus $1,015 in Medicare (1.45% of $70,000) — $5,355 a year the employer pays that never shows up on your stub, because it isn't your money to see.

Social Security tax applies only up to the annual wage base — $184,500 for 2026, per the SSA contribution and benefit base. Above that, the employer's 6.2% match stops. Medicare has no cap on either side. The 0.9% Additional Medicare Tax that applies to your own wages above $200,000 is an employee-only tax — your employer never pays a matching share of it.

A Worked Example: What a $5,000 Raise Costs

Take a $70,000 salary with a $5,000 raise to $75,000, both well under the Social Security wage base.

• The raise itself: $5,000
• Additional employer Social Security: $5,000 × 6.2% = $310
• Additional employer Medicare: $5,000 × 1.45% = $72.50
• Total employer cost of the raise: $5,000 + $310 + $72.50 = approximately $5,383

The $5,000 you were promised is real, and it lands in full before income tax withholding. But the number your employer budgeted against was approximately $5,383 — 7.65% more than the raise amount, because that's the combined employer FICA rate below the wage base.

When the Raise Crosses the Wage Base, the Math Changes

The wage base cap matters most for raises near or above $184,500. Take a raise from $182,000 to $190,000 — an $8,000 raise that crosses the 2026 Social Security wage base partway through.

• Only $2,500 of the raise (the portion from $182,000 up to the $184,500 cap) is subject to the employer's 6.2% Social Security match: $2,500 × 6.2% = $155.
• The remaining $5,500 of the raise, above the cap, owes no employer Social Security at all.
• Medicare has no cap, so the full $8,000 raise owes 1.45% Medicare: $8,000 × 1.45% = $116.
• Total employer cost: $8,000 + $155 + $116 = $8,271 — only $271 more than the raise itself, versus approximately $383 extra on a raise entirely below the cap.

The higher a salary already sits relative to the wage base, the smaller the gap between the raise and its true cost to the employer. That's a mechanical fact about how the Social Security cap works, not a judgment about what any raise should be.

What This Means When You're the One Asking

None of this is a reason to ask for less. It's context for why the conversation includes a budget step: your manager isn't just weighing your $5,000 against a $5,000 line item, they're weighing it against approximately $5,383 (or more, once other payroll costs like unemployment insurance are added — this guide covers FICA only). If you're building the case for a raise, knowing the employer's actual number can help you understand the size of the ask relative to what gets approved elsewhere in a budget.

If you want the employer-side total for your own salary and raise amount, the Cost of a Salary Increase Calculator computes it exactly, including what happens when a raise crosses the Social Security wage base partway through the year. If you'd rather see what the raise does to your own take-home pay, the Raise Impact Calculator covers that side of the same raise.

Frequently asked questions

Does a raise really cost more than the dollar amount?

Yes, from the employer's side. Every dollar of salary carries a matching employer FICA obligation — 6.2% Social Security (up to the annual wage base) and 1.45% Medicare (no cap) — on top of the wages themselves. A $5,000 raise below the wage base costs the employer approximately $5,383 once that match is included.

Does this employer FICA match come out of my paycheck?

No. The employer's 6.2% Social Security and 1.45% Medicare match is paid separately by the employer, on top of your gross wages. It never appears on your paystub because it isn't withheld from your pay — it's a separate cost the employer covers.

Why doesn't the employer pay the Additional Medicare Tax?

The 0.9% Additional Medicare Tax on wages above $200,000 applies only to the employee. Employers withhold it from an employee's pay once that threshold is crossed, but they don't pay a matching 0.9% themselves — only the base 1.45% Medicare rate has an employer match.

Does the Social Security wage base reset every year?

Yes. The Social Security wage base is $184,500 for 2026 and is set annually. Once an employee's wages for the year exceed it, the employer's 6.2% Social Security match stops for the rest of that year, even though the 1.45% Medicare match continues uncapped.

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This guide covers FICA only — Social Security and Medicare. It does not include FUTA, state unemployment insurance, workers' compensation, or benefits costs, which also factor into an employer's real cost of a raise. Informational only, not financial, tax, or HR advice. FICA rates and the 2026 Social Security wage base are sourced from IRS Topic 751 and the SSA contribution and benefit base. Last reviewed: September 2026. Written by Eric, StubTrue founder.

This guide is for informational and educational purposes only. It is not financial, tax, or legal advice. Tax rules are complex and subject to change. Consult a qualified professional before making financial decisions based on this content.

Last reviewed: September 2026 · Source: IRS Publication 15, SSA.gov.