Planning / Financial Resilience
Know what you earned. Know what was taken. Know what arrived.
A paycheck is not one number. It is a short story about what you earned, what the government withheld, what your benefits cost, and what actually landed in your account. This guide walks through every line on a real pay stub, explains the taxes and deductions separately, and then shows you how to check whether your withholding is where it should be.
This is chapter one of five. After the paycheck, move to income and cash flow, then banking, savings, and taxes.
The basic distinction
Gross pay is not what you take home
Gross pay is the total amount earned before anything is taken out. For an hourly worker, it is the hours worked multiplied by the pay rate, plus any overtime or premium pay. For a salaried worker, it is the salary amount for the pay period, plus any bonuses or commissions.
Net pay is what remains after federal income tax withholding, Social Security tax, Medicare tax, state and local taxes where applicable, benefit premiums, retirement contributions, and any other authorized deductions have been subtracted. Net pay is the amount that actually arrives in the bank account or on the check.
The gap between the two can be significant. A worker earning $52,000 per year sees about $2,000 in gross pay every two weeks, but might take home only $1,441 after deductions. That is roughly 72 cents on every dollar earned. The other 28 cents went to taxes, insurance, and retirement savings. Every one of those deductions has a specific purpose, and understanding them is the first step toward seeing household money clearly.
A household budget should ordinarily be built from net pay, the money actually available to spend. But ignoring the gross-to-net gap means ignoring where nearly a third of income goes, and that makes it harder to spot errors, evaluate benefit costs, or adjust withholding when circumstances change.
Hourly versus salary
An hourly worker's gross pay changes with hours worked. A salaried worker's gross pay is ordinarily the same each pay period. Both receive the same types of deductions. The difference is in how gross pay is calculated, not in how deductions work. Overtime, commissions, bonuses, and premium pay can appear for either type depending on the job and the employer's pay structure.
Payroll taxes
Federal income tax is not Social Security tax
One of the most common sources of confusion on a pay stub is the assumption that all tax lines are the same thing. They are not. Your stub typically shows at least three separate federal taxes, each with its own rules, rates, and purpose. Understanding them separately is the key to reading the stub accurately.
Tax line 1
Federal income tax withholding
This is the amount your employer withholds toward your annual federal income tax obligation. The federal income tax is a pay-as-you-go system: rather than writing one large check at the end of the year, the tax is collected throughout the year as you earn it.
The amount withheld from each paycheck depends on your income and the information you provided on Form W-4, the Employee's Withholding Certificate. Your employer uses that form to calculate how much to withhold. A worker with higher income, fewer dependents, or no additional deductions will typically see more withheld. A worker with lower income or more claimed adjustments will see less.
Source: IRS, "Tax withholding," reviewed/updated July 20, 2026.
Tax line 2
Social Security tax (OASDI)
Social Security tax funds the Old-Age, Survivors, and Disability Insurance program. The employee rate is a flat percentage of wages up to an annual limit called the wage base.
2026 rates (verify annually)
Employee Social Security tax rate: 6.2%
2026 Social Security wage base: $184,500
Wages above $184,500 in a calendar year are not subject to Social Security tax.
On a $2,000 biweekly paycheck, Social Security tax is $124.00 (6.2% of $2,000). This rate and wage base can change each year. Do not assume that this year's numbers will be the same next year. The current wage base is published by the Social Security Administration and reflected in IRS Publication 15.
Sources: IRS Publication 15 (2026); Social Security Administration, "Contribution and Benefit Base."
Tax line 3
Medicare tax
Medicare tax funds the federal Medicare health insurance program. The employee rate is a flat percentage with no wage-base limit, which means it applies to all covered wages regardless of how much a worker earns.
2026 rates (verify annually)
Employee Medicare tax rate: 1.45%
No wage-base limit. Additional Medicare Tax rules can apply at higher wages.
On a $2,000 biweekly paycheck, Medicare tax is $29.00 (1.45% of $2,000). Unlike Social Security, this deduction never stops because there is no earnings cap.
Source: IRS Publication 15 (2026).
Tax line 4 (where applicable)
State and local income taxes
Most states impose their own income tax, and some cities or counties add a local income tax on top. These appear as separate lines. Not every state has an income tax, and rates, brackets, and rules vary widely. This guide covers the federal lines in detail. For state-specific rules, check your state's revenue or taxation department.
Do not confuse these taxes
Federal income tax withholding, Social Security tax, and Medicare tax are three separate obligations with different rates, different rules, and different destinations. Treating them as one "tax" line makes it impossible to reconcile the stub or evaluate whether withholding is correct.
What else comes out
Not every deduction is a tax
After the tax lines, a pay stub typically shows additional deductions. These are not taxes. They are costs for benefits, retirement contributions, and other items that the employer deducts from pay, sometimes before taxes are calculated and sometimes after.
Benefits
Health and insurance premiums
If you have employer-sponsored health insurance, dental, or vision coverage, the employee share of the premium is typically deducted each pay period. The employer pays a portion and the employee pays the rest. These amounts should match what you selected during open enrollment or when you first enrolled.
Look for: Medical, Dental, Vision, FSA, HSA, Life Insurance, Disability
Retirement
Retirement plan contributions
If you contribute to a 401(k), 403(b), or similar employer-sponsored retirement plan, that contribution is deducted from your pay. These can be a dollar amount or a percentage of gross pay. Some are pre-tax (reducing taxable income for the pay period) and some are post-tax (Roth contributions).
Look for: 401(k), 403(b), TSP, Roth 401(k), pension contribution
Flexible accounts
FSA and HSA deductions
Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA) are pre-tax deductions that set money aside for qualified medical expenses. An FSA is typically use-it-or-lose-it within the plan year. An HSA rolls over and belongs to you, but it requires a qualifying high-deductible health plan. Both reduce taxable income.
Look for: FSA Medical, FSA Dependent Care, HSA Contribution
Other deductions
Union dues, garnishments, and more
Additional deductions can include union dues, court-ordered wage garnishments, IRS tax levies, charitable contributions through payroll, loan repayments to employer plans, parking or transit benefits, and other employer-specific items.
Look for: Union, Garnishment, Levy, Charitable, Parking, Transit
Every deduction on the stub should be something you authorized or something required by law. If a line appears that you do not recognize, ask payroll or your employer. The most common reasons a deduction seems unfamiliar are mid-year benefit changes, enrollment in a plan you forgot about, or a rate adjustment that took effect without a clear notification.
Pre-tax vs post-tax
Some deductions, such as traditional 401(k) contributions and medical insurance premiums under a Section 125 plan, come out before federal income tax is calculated. That means they reduce your taxable wages, so the tax withholding line is lower than it would be on the full gross amount. Post-tax deductions, such as Roth 401(k) contributions or after-tax insurance, are taken from pay that has already been taxed. Both reduce your take-home pay, but they interact differently with your tax line.
Worked example
One paycheck, line by line
Here is what a biweekly pay stub might look like for an employee earning $52,000 per year ($25.00/hour, 80 hours per pay period), single, with employer-sponsored health insurance and a 3% 401(k) contribution. Your numbers will differ, but the structure is the same.
Pay Period: Aug 4 - Aug 17, 2026 | Pay Date: Aug 22, 2026
Earnings
Pre-tax deductions
Taxes
Reading the math
Gross pay: $2,000.00
Pre-tax deductions (401k, medical, dental): -$167.00
Federal taxable wages: $1,833.00 (federal income tax is withheld on this amount, not on the full $2,000)
Social Security and Medicare are calculated on the full $2,000 (these taxes apply to gross wages for most employees)
After all taxes and deductions: $1,465.00 net, or about 73% of gross
Notice that pre-tax deductions reduced the federal taxable wages from $2,000 to $1,833, which means less federal income tax was withheld than would have been withheld on the full gross amount. The 401(k) and insurance premiums saved tax dollars now, but the 401(k) money will be taxed later when withdrawn in retirement. Social Security and Medicare, in contrast, were calculated on the full $2,000 because those taxes generally apply to gross wages before most pre-tax deductions.
This single example illustrates why "gross pay" and "the amount I pay taxes on" are not always the same number, and why "total deductions" and "total taxes" are different questions.
Your own paycheck
Nine steps to read any pay stub
This is the reconciliation a capable household can do with any pay stub. The first few times take five or ten minutes. After that, it becomes a quick scan that catches problems early.
Confirm the pay period
Check the start and end dates. Match them to the days you actually worked. If you are hourly, this is especially important because a wrong pay period can mean missing hours.
Verify hours or salary
Compare listed hours to your own records (a timesheet, app, or notebook). For salaried workers, confirm the salary amount matches your agreed compensation. If you worked overtime or premium hours, verify those appear at the correct rate.
Check the pay rate
Verify the hourly rate or salary basis matches your agreed wage. If a raise or rate change took effect, confirm it is reflected. Overtime is often 1.5 times the regular rate, but check your specific situation.
Confirm gross pay
Multiply hours by rate (or confirm salary amount). Add any overtime, premiums, or bonuses. Gross pay should match your expected total before any deductions. If it does not, the error is in the earnings section, not the deduction section.
Identify each tax line
Find federal income tax withholding, Social Security tax (6.2% of gross wages for 2026, up to the $184,500 wage base), Medicare tax (1.45% of gross wages, no cap), and any state or local tax. These are separate taxes with different rules. Do not lump them together.
Identify benefit and retirement deductions
Find health insurance premiums, dental, vision, FSA/HSA contributions, and retirement plan contributions. These are not taxes. Compare them to what you enrolled in. If a number seems wrong, pull up your most recent benefits enrollment summary and compare.
Identify other deductions
Look for union dues, garnishments, charitable contributions, loan repayments, parking or transit benefits, or employer-specific items. Every line should be something you authorized or something required by law. If you do not recognize a deduction, ask before assuming it is correct.
Verify net pay
Gross pay minus all taxes and deductions should approximately equal net pay. If it does not, start at gross pay and subtract each line one at a time until you find the discrepancy. Rounding can cause a difference of a few cents, but anything larger than a dollar or two is worth investigating.
Check year-to-date totals
Scan the YTD column. A sudden jump in any deduction line, or a total that seems too high or too low compared to what you expect, is worth investigating now rather than at tax time. Year-to-date totals are also how you can tell when Social Security tax stops for the year if your wages reach the wage base.
If something is wrong
Raise it with payroll or your employer promptly. Errors are easier to fix close to the pay date. Specific wage-payment and deduction law varies by state, so this page does not set one national rule for what a stub must show or how quickly a correction must happen. Know your state's requirements, or ask.
Controlling your withholding
Form W-4 is not the tax return
Form W-4, the Employee's Withholding Certificate, tells your employer how to calculate federal income tax withholding from your pay. It is an instruction to the payroll system, not a filing with the IRS that determines your final tax liability. Your actual tax is determined when you file your annual return.
What this means in practice: changing your W-4 changes your take-home pay during the year. More withholding means a smaller paycheck now and likely a larger refund (or smaller balance due) at tax time. Less withholding means a larger paycheck now but possibly a balance due (and potentially an underpayment penalty) when you file.
Neither outcome is automatically right or wrong. The IRS says that too little withholding can result in tax due and potentially an underpayment penalty, while too much withholding means the worker does not have use of that money until a refund is received. The question is whether your withholding strategy fits your tax position and cash-flow needs.
When to review your W-4
The IRS recommends checking your withholding in these situations:
Source: IRS, "Tax withholding," reviewed/updated July 20, 2026.
The IRS Tax Withholding Estimator
Rather than guessing how many allowances to claim or how much extra to withhold, use the IRS Tax Withholding Estimator. It was updated in March 2026 to reflect current law changes. The estimator asks about your income, withholding, deductions, and credits, then recommends whether to submit a revised W-4 and what to put on it.
To use it, you will need your most recent pay stub (for current year-to-date figures) and an estimate of any other income. The tool is at irs.gov/W4App or search "IRS Tax Withholding Estimator." Do not use third-party withholding calculators as a substitute for the IRS tool when making W-4 decisions.
Source: IRS, Tax Withholding Estimator FAQs, updated March 26, 2026.
You are not required to submit a new W-4 every year
If your most recent W-4 still fits your situation, you do not need to file a new one. But if your withholding has been consistently too high or too low, or if you have had a life change, reviewing the W-4 is a ten-minute task that can save real money or prevent a surprise at filing time.
The neutral question
Is your withholding where you need it to be?
There is a common debate about whether a large tax refund is good or bad. Both camps have a point, and neither is universally correct.
Too much withheld
The large-refund situation
You did not have use of that money during the year. It was an interest-free loan to the government. On the other hand, some households treat overwithholding as forced savings and prefer the lump-sum refund. Neither reaction is wrong. What matters is whether the situation was intentional.
Too little withheld
The balance-due situation
You had more money in each paycheck, but you may owe additional tax when you file and could face an underpayment penalty. If the balance due catches a household by surprise, it creates a financial shock. The question is whether the extra cash flow was budgeted with the expected tax bill in mind.
The correct question is not "which is better?" but "does your withholding fit your situation?" A household with irregular income, multiple jobs, or a working spouse may need to pay closer attention than a single-job household with stable income. The IRS Withholding Estimator is the tool for answering this question with real numbers instead of guessing.
Do not confuse W-4 changes with tax planning
Adjusting your W-4 changes when you pay, not how much you ultimately owe. It does not reduce your annual tax liability. It redistributes the same tax between paycheck withholding and the balance due or refund at filing time. Actual tax reduction comes from legitimate deductions, credits, and tax-law provisions, which is a separate topic.
The long view
Year-to-date totals and the annual picture
Most pay stubs include year-to-date (YTD) columns showing how much has been earned and deducted since January 1 of the current year. These totals serve three purposes.
Catching errors over time
A single pay-period error might be small enough to miss. But YTD totals accumulate those errors. If you are three-quarters through the year and your YTD federal withholding seems unusually high or low relative to your income, that could signal a W-4 problem, a payroll error, or an unintentional benefit change that has been compounding all year.
Tracking benefit costs
YTD totals for medical, dental, and retirement show exactly how much you have spent on benefits for the year. This is useful during open enrollment when you are deciding whether to change plans. It is also useful for budgeting: if your annual medical premiums total $2,470, that is a real cost of employment that belongs in your household money picture.
Watching the Social Security wage base
If your annual wages approach or exceed the Social Security wage base ($184,500 for 2026), your Social Security tax deductions will stop once you reach that threshold. Your YTD Social Security wages should match the wage-base figure at the point the deduction stops. If it continues past that point, that is an error to raise with payroll. Your net pay will temporarily increase when Social Security tax stops for the year, but it resumes on January 1 of the following year.
Connecting the stub to tax time
At the end of the year, your employer issues Form W-2, which reports your total wages and the total taxes withheld. The YTD figures on your final pay stub of the year should closely match the W-2. If they do not match, investigate before filing your tax return. The W-2 is the document the IRS receives, and your return needs to reconcile with it.
Annual review items
These numbers change. Check them every year.
Several paycheck-related figures are set annually and can change from one year to the next. The numbers below are current for 2026. Do not carry them forward to future years without verifying them against IRS and SSA sources.
Tax Year 2026 Figures (verify annually)
Social Security employee tax rate
Source: IRS Pub. 15 (2026)
6.2%
Social Security wage base
Source: SSA
$184,500
Medicare employee tax rate
Source: IRS Pub. 15 (2026)
1.45%
Medicare wage-base limit
Source: IRS Pub. 15 (2026)
None
Federal withholding tables
Source: IRS Pub. 15-T (2026)
Updated annually
Where to verify current-year figures
Social Security wage base: Social Security Administration, "Contribution and Benefit Base" (ssa.gov/oact/cola/cbb.html)
Tax rates and withholding: IRS Publication 15, Employer's Tax Guide (irs.gov/publications/p15)
Withholding tables: IRS Publication 15-T (irs.gov/publications/p15t)
Your own withholding check: IRS Tax Withholding Estimator (irs.gov/W4App)
Try it yourself
Two exercises to build the skill
Exercise A
Pay stub anatomy
Using your most recent pay stub, identify every line in the list below. If you cannot find one, that is useful information too.
Then answer: which deductions are taxes and which are not?
Exercise B
Gross-to-net reconciliation
Start with gross pay. Subtract each deduction in order. Confirm that your running total approximately reaches the net-pay figure at the bottom. If it does not, investigate the difference.
Gross pay: ___________
Minus pre-tax deductions: ___________
Minus federal income tax: ___________
Minus Social Security: ___________
Minus Medicare: ___________
Minus state/local tax: ___________
Minus post-tax deductions: ___________
Calculated net pay: ___________
Stated net pay: ___________
Difference: ___________
Sources
Where this information comes from
This guide draws on primary federal sources for payroll tax rates, withholding procedures, and W-4 guidance. Tax-year-specific figures are labeled and should be verified annually.
IRS Publication 15 (2026), Employer's Tax Guide
Social Security and Medicare tax rates, wage base, withholding procedures. irs.gov/publications/p15
IRS, Tax Withholding
Pay-as-you-go system, when to review withholding, W-4 guidance. Reviewed/updated July 20, 2026. irs.gov
IRS, Tax Withholding Estimator FAQs
Updated March 26, 2026. irs.gov
Social Security Administration, Contribution and Benefit Base
Annual wage base for Social Security tax. ssa.gov
IRS, Forms, Instructions and Publications (Form W-4)
Current Form W-4 and instructions. Page updated June 27, 2026. irs.gov
This page was last reviewed September 1, 2026. Tax-year-specific figures are labeled "2026" and should be verified for later years using the sources above.
Next chapter
You read the paycheck. Now track where the money goes.
The paycheck tells you what arrived. The next step is seeing where it goes after it lands. Tracking income, expenses, and cash-flow timing is how a household moves from reacting to bills toward controlling the flow.