Tax Refund Estimator

What a refund is, in plain terms

A refund is not a bonus. It is the gap between what your employer sent to the IRS during the year and what the return says you owe. Withhold more than the bill and the difference comes back to you; withhold less and you write a check in April.

That gap is decided by two numbers. The first is your total tax, which depends on your income, your filing status, the standard deduction and any credits. The second is what was already taken out, which comes from the W-4 you gave your employer and from any estimated payments you made. Withholding is only a guess made in advance, and the return is the settling up.

People often treat a large refund as good news and a bill as bad news. Both are just arithmetic on money that was already yours. Someone who gets $3,270 back had about $272 a month taken out of paychecks that they could have used or saved during the year, and the government held it without paying interest.

How the standard deduction decides what is taxed

Before any bracket applies, your income is cut down by the standard deduction. Most people take it because it is larger than their mortgage interest, charity and state tax put together. For 2026 the amounts are $16,100 for single filers, $32,200 for married couples filing jointly and $24,150 for heads of household, published in Revenue Procedure 2025-32.

On $68,000 of income, a single filer subtracts $16,100 and pays tax on $51,900. That is the number the brackets work on, not the $68,000. It is why someone earning $68,000 does not pay 22% of $68,000. The first $12,400 of taxable income is taxed at 10%, the slice up to $50,400 at 12%, and only the $1,500 above that at 22%, for a total of $6,130.

If your mortgage interest, state and local tax up to the cap, charitable gifts and medical costs add up to more than the standard deduction, itemizing lowers the taxable income further. For most households the standard deduction is the bigger number, and that has been true since 2018.

The 2026 brackets, and why your raise is taxed twice over

The system is progressive, so a raise does not push all of your income into a higher bracket. Only the part above the line moves up.

Someone single with $51,900 of taxable income sits in the 22% bracket, but the actual bill is $6,130, which is about 9% of the $68,000 they earned. The bracket you land in is the rate on your next dollar, not the rate on all of them. That is the single most common thing people get wrong about refunds.

Withholding has trouble with this because each employer withholds as though its paycheck is your only income for the year. Two jobs at $34,000 each withhold far less than one job at $68,000, and a married couple where both work gets the same shortfall unless the W-4 says so. That is how a household ends up owing even though each job withheld correctly on its own.

Credits, and the child tax credit in 2026

Deductions lower the income that gets taxed. Credits lower the tax itself, dollar for dollar, which makes them worth far more.

The child tax credit is $2,200 per qualifying child under 17 at the end of the year. On the $68,000 single filer above it takes the tax from $6,130 down to $3,930. If the credit is bigger than the tax, up to $1,700 per child can still come back to you as the additional child tax credit, which is why a head of household filer earning $58,000 with two children can have a tax bill of zero and still get the whole $4,200 that was withheld. Full details sit on the IRS child tax credit page.

Above $200,000 of income for single filers, or $400,000 for joint filers, the credit drops by $50 for every $1,000. At $210,000 with one child the credit falls from $2,200 to $1,700.

Seven households, seven outcomes

Same rules, and the outcomes differ widely. Every row below takes the standard deduction, and every row assumes the filing status shown.

The refunds cluster at lower incomes where the child tax credit beats the tax bill, and the bills show up where withholding was set too low for a second income or a big bonus. Notice the head of household row: tax of zero plus $4,200 withheld is a full refund of everything, and that filer may also qualify for the earned income credit besides.

Reading your own numbers off last year's return

Grab last year's Form 1040 and pull four lines. Line 11 is your income before the deduction. Line 15 is taxable income after the deduction. Line 24 is the total tax the return said you owed. Line 25 is what was withheld, from W-2 box 2 and any 1099. The gap between lines 24 and 25 is what you either got back or wrote a check for.

Enter this year's best estimate of those same numbers here. If your income is close to last year and your W-4 has not changed, the result will look familiar. If you changed jobs, got married, had a child, started freelancing, or took a distribution, redo it, because all five move the answer by hundreds or thousands of dollars.

One caution about comparing with last year. Credits expire and amounts are reindexed every year, so a refund that repeated itself for five years can stop without anything in your life changing. Check the current year figures rather than assuming.

How to fix the number before the year ends

If the estimate shows you owe more than you want to pay in April, change the W-4 now rather than in December. Withholding only affects the paychecks that remain, so a change made in October has about a quarter of the effect it would have had in January.

• Add a flat extra amount. Line 4(c) takes that many extra dollars out of every paycheck. $100 on a biweekly schedule is about $2,600 over a full year.
• Fix the two job problem. Step 2 of the W-4 handles a working spouse or a second job, and skipping it is the most common cause of a surprise bill.
• Use the IRS estimator. The Tax Withholding Estimator reads your paystub and tells you what to put on the form.
• Self-employed income needs estimated payments. No employer withholds for you, so the tax is due four times a year on Form 1040-ES.
• If the bill is more than you can pay, the Taxpayer Advocate Service explains payment plans and your options.

If the estimate shows a refund you do not want, the same form fixes it in the other direction. Aiming for within a few hundred dollars of zero keeps the most money in your pocket during the year without risking an underpayment penalty.

What this estimate leaves out

This is a federal income tax estimate built from the 2026 brackets, the standard deduction and the child tax credit. It does not include:

• State and local income tax, which is a whole separate return with its own rates.
• Self-employment tax, which is 15.3% of net earnings and is not covered by W-2 withholding at all.
• Other credits, such as the earned income credit, education credits and the credit for child and dependent care.
• Itemized deductions, which matter most for homeowners with large mortgage interest and state tax.
• Tax on investments, retirement withdrawals, unemployment and other income that is not wage income.

Use it to see the shape of the year and to decide whether to touch your W-4, then confirm the real number with the IRS estimator or a preparer before you file.

This is an estimate for planning, not tax advice. Rules and amounts change, and your own return depends on details this page does not ask about.