A $1,040 tax refund is $40 a paycheck, coming back
· 5 min read
A $1,040 tax refund feels like a windfall. It is $40 from each of your 26 paychecks, coming back. Nobody gave you anything. You were paid a little less all year, and this is the difference.
How is a tax refund calculated?
One subtraction. Take the income tax withheld from your pay during the year and take away the income tax you actually owe for the year. If more was withheld than you owe, the difference is a refund. If less was withheld, the difference is a bill.
Here is one example. On a $75,000 salary, a single filer taking the standard deduction owes an estimated $7,670 in federal income tax for 2026. Suppose $8,710 was withheld across the year.
$8,710 withheld, $7,670 owed: a $1,040 refund. Spread over 26 paychecks that is $40 each time.
Is a tax refund your own money?
Yes. The IRS’s own word for it is an overpayment: you paid more tax than you owed during the year, through withholding, and the extra is sent back. It was held for up to a year and it generally comes back without interest.
That is the whole of it for a refund that comes from withholding. Some refunds also include tax credits, which are a different thing and are not counted here.
Does a bigger refund mean you paid less tax?
No, and this is the part most worth telling someone. Take two people on the same salary who owe the same $7,670.
| Withheld | At tax time | Total paid | |
|---|---|---|---|
| First | $8,710 | $1,040 back | $7,670 |
| Second | $7,150 | $520 owed | $7,670 |
One gets $1,040 back and the other writes a cheque for $520. Both paid exactly $7,670. The second person simply had $60 more in every paycheck along the way.
The refund measures how far the withholding missed. It says nothing about how much tax was paid.
Why is my tax refund smaller this year?
Because the subtraction changed, and there are only two numbers in it. Either less was withheld, or more tax was owed.
- Less was withheld. Then the money arrived already, in the paychecks. A refund that falls from $1,040 to $520 with the same tax bill means $20 more in each paycheck during the year. Nothing was lost.
- More tax was owed. A raise, a second income, or a credit or deduction that no longer applies all raise the tax, and the refund shrinks by the same amount.
Which one it was is on two lines of paper: the federal income tax withheld on the W-2, and the total tax on the return. Compare each with last year’s.
Why do I owe tax when tax was withheld all year?
Because withholding is an estimate, made from the form you gave your employer, and it came in under the real figure. It tends to miss when there is more than one job in the household, or income that nothing was withheld from. The IRS has a withholding estimator that works it out for a real situation, which this article cannot.
What this does not tell you
The $7,670 is an estimate of federal income tax for a single filer taking the standard deduction, from the published 2026 figures. The amounts withheld are examples we chose. Tax credits, other income, itemised deductions and state tax are left out, and for some households credits are a large part of the refund. Whether to change your withholding is a decision this article does not make. Not tax advice.
The take-home pay calculator estimates the federal income tax on any salary, which is the first number in the subtraction. The second is on your W-2.
