Claimed too many allowances.

[jadatenner]

What happens if i made a mistake and claimed 4 allowances on my Federal W4 form for work for 9mos and i only claim 2?

[DoninGA]

Then it is possible that you will have taxes owed on your federal tax return if not enough federal taxes were withheld from your income.

[xmasbaby0]

You should consider changing your W-4 for 2026 so that you have enough tax withheld.

W-4

https://turbotax.intuit.com/tax-tools/calculators/w4/ 

https://www.irs.gov/individuals/tax-withholding-estimator

https://www.irs.gov/pub/irs-pdf/fw4.pdf