How to Read Your Paystub: Every Line Explained

Paystubs look simple at first glance, but they often raise more questions than answers.

Why is the take-home pay lower than expected?What are all these deductions?Why does the same salary result in different net amounts each month?

Understanding your paystub gives you clarity, confidence, and control over your finances. This guide explains each common line item in plain language.

Gross Pay: Where Everything Starts

Gross pay is the total amount you earned during the pay period before any deductions.

It may include:

• Base salary or hourly wages
• Overtime pay
• Bonuses or commissions

This is the number most people recognize, but it’s only the starting point.

Federal Income Tax Withholding

This line shows how much federal income tax is withheld from your paycheck.

The amount depends on:

• Your income level
• Filing status
• Withholding selections on your W-4

It’s an estimate, not a final calculation.

Social Security Tax

Social Security tax is usually listed as:

• 6.2% of wages, up to the annual wage cap

This deduction funds retirement, disability, and survivor benefits.

Once you reach the yearly limit, this deduction stops for the remainder of the year.

Medicare Tax

Medicare tax appears as:

• 1.45% of wages, with no income cap

Higher earners may also see an additional Medicare tax withheld once income crosses certain thresholds.

State and Local Taxes

If applicable, your paystub may include:

• State income tax
• City or local income tax

Not all states or cities have these taxes, which is why paystubs vary by location.

Pre-Tax Deductions

Some deductions are taken before taxes, which lowers taxable income.

Common examples include:

• Health insurance premiums
• Retirement contributions
• Health savings accounts

These deductions can reduce your overall tax burden.

Post-Tax Deductions

Post-tax deductions are taken after taxes are calculated.

Examples may include:

• Union dues
• Wage garnishments
• Certain insurance plans

These do not reduce taxable income.

Net Pay: The Number That Matters Most

Net pay, also called take-home pay, is what actually reaches your bank account.

This is the number you should use for:

• Budgeting
• Monthly expenses
• Savings planning

Everything else on the paystub explains how this number was reached.

Year-to-Date (YTD) Totals

Many paystubs include year-to-date totals.

These show how much you’ve earned and how much tax you’ve paid so far this year, which is useful for tracking progress and planning.

Why Reviewing Your Paystub Matters

Paystubs aren’t just paperwork.

Reviewing them helps you:

• Catch errors early
• Understand tax withholding
• Track benefits and deductions
• Make informed financial decisions

Small mistakes can compound if they go unnoticed.

Final Thoughts

Your paystub tells a story.

Once you know how to read it, the confusion fades and the numbers start to make sense. Understanding each line empowers you to manage your income instead of guessing where it went.

Clarity turns a paycheck into a tool.

Disclaimer: This content is for informational purposes only and does not constitute tax, legal, or financial advice. Paystub formats and deductions vary by employer and jurisdiction.

References

• What is a Pay Stub? Everything You Need to Know - ADP
• What Are Payroll Deductions? Pre-Tax & Post-Tax Deductions - ADP
• Understanding Employment Taxes - IRS

Key Takeaways

• Gross pay appears first; every line below it is a deduction that shrinks the dollars hitting your bank account.
• 'FED TAX' reflects your W-4 elections — not a fixed rate — so updating the W-4 directly changes this line.
• 'FICA' lumps Social Security (6.2%) and Medicare (1.45%) — the 'MED' or 'OASDI' abbreviations break them out separately.
• YTD columns are the most useful section: they show whether you're on pace to hit contribution and wage-base limits.
• Pre-tax deductions (401(k), HSA, insurance premiums) reduce your federal taxable wages shown in W-2 Box 1.

Common Mistakes to Avoid

• Ignoring the YTD Social Security column and overpaying past the $176,100 2025 wage base without requesting a refund.
• Not verifying that pre-tax 401(k) contributions are actually being withheld at the elected percentage.
• Missing a mid-year change — a new state, a bonus, or a benefit election — that silently shifts your withholding.
• Assuming your net pay is wrong because the fed-tax line changes between checks; bonuses are withheld at the flat 22% supplemental rate.
• Skipping the 'imputed income' section, which can include taxable gym stipends or group-term life insurance over $50k.

Line by Line: Hannah's First Paystub Decoded

Hannah W. is a single filer in Colorado earning $48,000 per year at a biotech lab, paid biweekly. Her first paycheck showed $1,423.60 hitting her bank account on a $1,846.15 gross check — and she could not explain what every line meant. Here is the deduction stack her stub actually listed.

• Gross pay (biweekly): $1,846.15 — $48,000 ÷ 26 periods
• Pre-tax medical premium: −$68.40 — employer plan, reduces taxable wages
• 401(k) 6%: −$110.77 — traditional pre-tax, goes into Fidelity account
• Federal income tax withholding: −$131.72 — based on W-4 filing status (Single, 0 adjustments)
• Social Security (6.2%): −$101.63 | Medicare (1.45%): −$23.77 — the two FICA lines
• Colorado state tax (4.40% flat): −$64.35 — Denver has no city wage tax
• Net deposit: $1,345.51 — $500.64 gap between gross and take-home

The gap between Hannah's $1,846 gross and $1,345 net check is 27.1% — higher than most 'salary-to-paycheck' online tools quote because those tools typically exclude benefits. Benefits are not a tax; they are a voluntary trade-off. Her 401(k) 6% and health premium together account for $179.17 of the gap, reducing future tax and buying coverage today. Only the remaining $321 is pure tax withholding.

Worked Example: Every Line of Damon B.'s Paystub

Damon B., HoH in Iowa earning $62,000, pulled out his most recent biweekly paystub (gross $2,384.62) and walked through each deduction line. The numbers are small per check but the pattern explains the annual W-2 perfectly.

• Gross: $2,384.62. 401(k) pre-tax 5%: minus $119.23.
• Pre-tax medical premium: minus $78.00. Federal taxable wages this check: $2,187.39.
• Federal income tax withheld (per W-4 HoH with CTC claimed): roughly $165.
• Social Security 6.2% of FICA-taxable $2,306.62: $143.
• Medicare 1.45%: $33.44. Iowa state income tax: roughly $95.
• Net deposit: roughly $1,752.

Damon's 73% take-home ratio mirrors what his annual W-2 will show: Box 1 is lower than Box 3 (Social Security wages) because pre-tax 401(k) dollars lowered Box 1 but not Box 3. Knowing which line matches which box turns a paystub into a W-2 preview - useful for catching withholding errors long before January. Publication 15 explains the employer's side of every line.