How to Read Your Paycheck: Gross, Net & Every Deduction

Your paycheck is a small math problem. Once you can read each line, you’ll catch errors that cost you hundreds of dollars a year, plan your budget accurately, and know exactly what to change if you want more take-home pay.

This guide walks through every line on a typical U.S. pay stub, with example math, and shows you how to spot the most common payroll mistakes.

The Big Picture: Gross vs. Net

Two numbers matter most:

• Gross pay: what you earned before deductions.
• Net pay: what actually hits your bank — also called “take-home pay.”

The gap between them — sometimes 25-35% — is where all the deductions live.

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Example

• Gross pay: $5,000 / month.
• Total deductions: $1,400.
• Net pay: $3,600.

You’re earning $5,000 but **planning your life around $3,600**. Budgeting against gross is one of the most common money mistakes.

Section 1 — Earnings

This part shows your gross pay.

Hourly employees

• Hours worked × hourly rate = regular pay.
• Overtime hours × 1.5 × hourly rate = overtime (after 40 hours/week in most states).
• Bonus, commission, holiday pay listed separately.

Salaried employees

• Annual salary ÷ pay periods per year = gross per paycheck.
• For biweekly pay: salary ÷ 26.
• For semi-monthly (15th and last day): salary ÷ 24.

Example

$65,000 salary ÷ 26 biweekly checks = **$2,500 gross per check.**

Section 2 — Federal Income Tax (FIT)

The IRS takes a chunk based on:
– Your W-4 form (filing status, dependents, additional withholding).
– A progressive tax bracket system.

2026 federal tax brackets (single filer, simplified)

• 10% on income up to $11,600.
• 12% on income $11,600 – $47,150.
• 22% on income $47,150 – $100,525.
• 24% on income $100,525 – $191,950.
• 32%, 35%, 37% at higher brackets.

Real math

On a $65,000 salary (single), your **effective** federal tax rate is roughly 12%, not 22%. The first $11,600 is taxed at 10%, the next chunk at 12%, etc.

What to check

• Your W-4 reflects your actual situation.
• If you owe a big tax bill in April, you may need to increase withholding.
• If you got a huge refund, you’re loaning the government money interest-free — consider decreasing withholding.

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Section 3 — State Income Tax

Varies wildly:
– No state tax: Florida, Texas, Washington, Nevada, Tennessee, New Hampshire, South Dakota, Wyoming, Alaska.
– Flat tax: Colorado (4.4%), Illinois (4.95%), Indiana, North Carolina, several others.
– Progressive: California, New York, others.

Example

California top earners pay up to 13.3%. Texas earners pay 0%. That’s a real difference for the same gross income.

Section 4 — FICA (Federal Insurance Contributions Act)

Two parts:

Social Security: 6.2%

On wages up to a cap (~$168,600 in 2024-25; rises slightly each year).

Medicare: 1.45%

On all wages, plus an additional 0.9% on income above $200K (single).

Combined FICA: 7.65%

This is the line that surprises young workers most. You can’t reduce FICA with deductions — it’s a flat 7.65% off the top.

Example

$2,500 gross paycheck × 7.65% = **$191.25** FICA.

Section 5 — Pre-Tax Deductions

These come out before federal/state taxes are calculated, lowering your taxable income.

Common pre-tax items

• 401(k) traditional contribution. Up to $23,500 in 2025.
• Health insurance premium (sometimes).
• HSA (Health Savings Account) contribution.
• FSA (Flexible Spending Account) for medical or dependent care.
• Commuter benefits.

Why they matter

A $300 traditional 401(k) contribution lowers your taxable income by $300 — saving you maybe $66 in taxes (at 22% bracket). Your **paycheck shrinks by ~$234**, but the full $300 lands in your retirement.

This is one of the most powerful payroll moves you can make.

Section 6 — Post-Tax Deductions

These come out after taxes.

Common post-tax items

• Roth 401(k) contribution. No tax savings now; tax-free in retirement.
• Life insurance premium.
• Disability insurance.
• Garnishments (court-ordered).
• Union dues (sometimes).

These reduce your take-home but don’t reduce your tax bill.

Section 7 — Other Common Lines

YTD (Year-to-Date)

Cumulative totals from January 1.
– YTD gross.
– YTD federal tax.
– YTD FICA.

Use YTD to forecast tax season and check that withholding is on track.

Employer contributions

Some pay stubs show what your employer contributes (401(k) match, health insurance share). These don’t affect your paycheck but are part of your total compensation.

PTO balance

Hours of paid time off available.

A Sample Pay Stub Math Walkthrough

Single employee, $65,000 salary, biweekly, contributes 6% to traditional 401(k), $80 health premium.

Earnings
– Regular pay: $2,500.00

Pre-Tax Deductions
– 401(k) (6%): -$150.00
– Health premium: -$80.00
– Taxable wages: $2,270.00

Taxes
– Federal income tax (12% effective bracket): -$272.40
– State income tax (5%): -$113.50
– Social Security (6.2% × $2,420 — FICA wages, before 401k but after health): -$150.04
– Medicare (1.45%): -$35.09

Post-Tax Deductions
– Life insurance: -$10.00

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Net Pay
$2,500 – $150 – $80 – $272.40 – $113.50 – $150.04 – $35.09 – $10 = $1,688.97

That’s the number that lands in the bank account. Notice how the $2,500 gross** becomes **~$1,690 net — a 32% gap.

What to Check on Every Paycheck

1. Hours and rate

Match what you worked. Overtime should be 1.5× your regular rate.

2. Withholding consistency

If your federal or state tax suddenly changed, your W-4 may have been processed incorrectly.

3. 401(k) contribution

Make sure the right percentage is being deducted, and the employer match is showing if you qualify.

4. Health insurance deduction

Single coverage vs. family rate matters — make sure you’re being charged the right plan.

5. PTO accrual

You should earn a set number of hours per pay period. Make sure it’s adding up.

6. Garnishments or oddities

Any deduction you don’t recognize, ask HR immediately.

Common Paycheck Mistakes

Wrong W-4

Filing single when you’re married (or vice versa) drastically changes withholding.

Pre-tax vs. post-tax confusion

A Roth 401(k) cut doesn’t lower your taxable income. A traditional 401(k) does. Choose intentionally.

Bonus tax shock

Bonuses are often withheld at a flat 22% federal rate, even if your normal bracket is 12%. The extra comes back at tax time, but it surprises people.

Forgetting state tax differences when moving

Moving from California to Texas means a noticeable paycheck increase from no state income tax — plan for it.

Not adjusting for major life changes

Marriage, baby, mortgage, job change — update your W-4 within a month.

How to Increase Your Take-Home (Without a Raise)

1. Adjust your W-4

If you got a huge refund last year, you’re over-withholding. Lower it to bring more home each month.

2. Choose health plan carefully

A higher-deductible HSA plan often gives a bigger paycheck — and the HSA contribution is pre-tax.

3. Maximize HSA / FSA contributions

Both reduce taxable income.

4. Pre-tax 401(k) up to employer match

Free money + tax savings. Always grab the full match.

5. Pre-tax commuter benefits

If your employer offers them, parking and transit can come pre-tax.

Free Resources

Effortless Math has practical math practice for every grade and topic:

• Math Blog — financial math guides.
• Math Topics Library — percents, decimals, real-world math.
• Percent Worksheets — the math behind every paycheck.

Frequently Asked Questions

Why is my paycheck smaller than expected?
Federal + state + FICA + benefits often eats 25-35% of gross. Use a paycheck calculator for an accurate estimate.

What’s the difference between gross and net pay?
Gross = before deductions. Net = what hits the bank.

Can I reduce my FICA tax?
No. FICA is a flat 7.65% on most wages and can’t be reduced by deductions.

Should I contribute to traditional or Roth 401(k)?
– Traditional = tax break now, taxed later.
– Roth = no break now, tax-free later.
– Most experts recommend Roth if you’re young and in a lower bracket; traditional if you’re high-income.

How often should I check my W-4?
Once a year, and after any major life change (marriage, baby, second job, home purchase).

What if my pay stub has an error?
Contact HR or payroll in writing (email). Document the discrepancy and the date you reported it.

Read Every Stub, Catch Every Error

The 5 minutes you spend reading your paycheck each pay period can catch payroll errors, overcharged premiums, or wrong tax withholdings that cost you hundreds of dollars a year. Most workers never look. Be the one who does.

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