FICA vs SECA
Most people leaving a W2 job for independent work know taxes will change. What they miss is which tax changes, and by how much. FICA and SECA fund exactly the same things — Social Security and Medicare. The difference is who pays. As an employee you split the bill. On your own, you pay both halves.
FICA
FICA stands for the Federal Insurance Contributions Act. It is the Social Security and Medicare payroll tax on employees. The total is 15.3 percent of wages, but the employer pays half. You only ever see 7.65 percent withheld from your paycheck. The other 7.65 percent is paid quietly by your employer and never shows up on your pay stub.
SECA
SECA stands for the Self-Employment Contributions Act. It is the same Social Security and Medicare tax, applied to self-employed people. There is no employer to cover the other half, so you pay both halves yourself: the full 15.3 percent. You can deduct the employer-equivalent half when calculating your income tax, which softens the blow a little, but you still write the whole check.
FICA vs SECA: side by side
| Dimension | FICA | SECA |
|---|---|---|
| Who pays | Split between you and your employer. | You alone. There is no employer half. |
| Your share | Half of the total tax. | The entire tax, both halves. |
| Typical rate you personally bear | About 7.65 percent of wages. | About 15.3 percent of net self-employment earnings. |
| How it is paid | Withheld automatically from every paycheck. | You pay it yourself, usually through quarterly estimated taxes. |
| What it funds | Social Security and Medicare. | Social Security and Medicare — exactly the same programs. |
Which one, when?
FICA: FICA applies while you are an employee. It is the cheaper side of this trade for one reason only: your employer is covering half of a tax you would otherwise owe in full.
SECA: SECA applies the moment you earn meaningful income on your own — consulting, freelancing, 1099 contract work. Price for it from day one rather than discovering it at tax time.
Frequently asked questions
Can you show a worked example?
Take $100,000 of earnings. As an employee, FICA takes about 7.65 percent from you, roughly $7,650, while your employer quietly pays a matching $7,650. Self-employed on the same $100,000, SECA charges the full 15.3 percent, roughly $15,300 — about $7,650 more out of your pocket. The tax is applied to about 92.35 percent of net earnings and you can deduct the employer-equivalent half against income tax, so the real hit is slightly less than double, but the direction is clear: this bill roughly doubles when you go independent.
Is SECA a different tax from FICA?
No. It funds the same two programs, Social Security and Medicare, at the same combined rate. The only difference is that FICA splits the bill between employee and employer, while SECA puts the whole thing on the self-employed person.
Why does this mean my consulting rate has to be higher?
Because you are now paying a tax your employer used to split with you, on top of losing benefits and paid time off. On $100,000 of income that is roughly $7,650 you never used to see. Any rate that simply matches your old salary quietly leaves you worse off.
Can I deduct any of it?
Yes. You can deduct the employer-equivalent half of SECA when calculating your adjusted gross income. It reduces your income tax, not the self-employment tax itself, so it takes the edge off without changing the headline: you owe both halves.
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