The two numbers are the ends of one subtraction. Gross is where the subtraction starts; net is where it ends; everything printed in between is the reason they differ:
gross pay − total deductions = net pay
That identity is why a pay stub prints all three. Any reader who can see them can re-do the arithmetic without knowing anything about you.
What gross pay is
Gross pay is the total value of the work in the period, priced before anything is taken out. It is not the annual figure and it is not what arrives in your account — it is the starting point for this pay period only.
If you are paid hourly
Gross is hours worked × your rate, plus every other line that is taxable earnings: overtime at its premium rate, a shift differential, a bonus, a reimbursement that payroll chose to tax. Those extra lines are inside gross even though they are not part of the base wage, which is why a stub can show a gross well above rate × hours.
If you are paid a salary
A salary is quoted per year, so gross for a period is the annual figure divided by the number of periods — 52, 26, 24 or 12 — and then adjusted for anything the period did not carry in equal measure: unpaid leave reduces it, a bonus or overtime increases it. The divisor is also where the bi-weekly versus semi-monthly confusion lives (26 periods against 24), and the net pay guide works that table out in full.
What net pay is
Net pay is what the paycheck or the deposit is actually worth — sometimes labeled take-home pay, amount paid or net wages. It is the number your budget can use, and the one that must match the credit in your bank account.
Two things net pay is not. It is not a measure of what the job pays, because two people on identical gross can have very different nets. And it is not what the employer spent on you: the employer’s own payroll taxes, insurance contributions and workers’ compensation never appear on your side of the document at all.
What sits between them
Three families, in the order a payroll register usually applies them:
- Pre-tax deductions come out of gross and out of the wages taxes are computed on: many health premiums, traditional 401(k) contributions, some commuter and flexible-spending benefits. They are the reason a small change in a benefit can move net noticeably.
- Statutory taxes are computed on what is left: federal withholding from the tax tables and your elections, each FICA component, state and local income tax where they exist.
- Post-tax deductions come out after tax is calculated: wage garnishments, union dues, Roth contributions, life insurance, a workplace charity. They reduce the deposit without reducing the taxable base.
Which side of the tax a line falls on is the whole difference between “my gross went down a little and my net went down a lot” and an actual error — the payroll deductions guide sets out the categories and the order they apply in.
One period, drawn as a stack, so the size of the middle is visible rather than described:
The same gross, two different gaps
Two employees, identical bi-weekly gross of $2,400.00, same state — the gross pay vs net pay difference reduced to one table. The amounts are invented for this page, but every line is internally consistent: the subtractions close, and that is the point of showing them.
| Line | Employee A — no elections | Employee B — retirement and coverage |
|---|---|---|
| Gross pay | $2,400.00 | $2,400.00 |
| Traditional 401(k) (pre-tax) | $0.00 | $240.00 |
| Health premium (pre-tax) | $0.00 | $148.00 |
| Wages taxes are computed on | $2,400.00 | $2,012.00 |
| Federal income tax withheld | $396.00 | $302.00 |
| Social Security | $148.80 | $124.74 |
| Medicare | $34.80 | $29.17 |
| Union dues (post-tax) | $0.00 | $12.00 |
| Total deductions | $579.60 | $855.91 |
| Net pay | $1,820.40 | $1,544.09 |
Read it as two separate stories and the comparison stops looking unfair. B’s taxes are lower — $455.91 against A’s $579.60 — because $388.00 of B’s compensation left the taxable base first. B’s net is lower only because $400.00 of it is money B chose: retirement savings, an insurance premium, dues. Same gross, different gap, and neither gap is an error.
The check that survives every version of this: add total deductions back to net and require gross to fall out exactly. If it does not, a line is missing from the document — commonly a benefit that started mid-year or a garnishment that is not itemised. How to read a pay stub runs the same check from the other direction, line by line, and defines the three totals that must reconcile.
If you want to see the identity happen while you type, the builder recomputes gross, total deductions and net on every keystroke — and nothing leaves the page until you ask for the file. Two terms that carry most of the weight above, FICA and pre-tax, are defined alongside 23 others in the payroll terms glossary.
Frequently asked questions
Is gross pay the same as my salary divided by pay periods?
For an ordinary period it is, and the exceptions are what makes the distinction worth knowing. Overtime, a bonus, a taxable reimbursement or unpaid leave all change one stub’ss gross without changing the annual figure, so the two numbers answer different questions: gross describes the period, salary describes the year.
Why is the gap between gross and net bigger for some people than others?
Because everything in between is personal. Filing elections, benefit premiums, a retirement contribution rate, a garnishment, the state you work in and whether you have children all change the size of the gap without changing the gross at all. Two people on identical pay can finish a period several hundred dollars apart.
Which of the two numbers matches the deposit I actually receive?
Net pay, and it is the line usually labeled “amount paid” or “take-home”. Gross is the starting point of the subtraction and total deductions is the explanation in between; the three lines exist separately so that gross minus deductions equals net can be checked by anyone reading the document.
Does the employer’s payroll tax come out of my gross pay?
It does not. The employer’s share of Social Security and Medicare, unemployment insurance and workers’ compensation are the business’s own costs, reported nowhere on your stub. If a document shows them being subtracted from your pay, that is a line worth questioning, because it moves a legal employer obligation onto the worker.