evilanne
Well-known member
Rcf3,
When I set up installment payments it was all done by paper & faxed in...not sure if that is still an option or not but it took me several times to find someone answering the phone to get the correct answer on withholding. Their directions are totally messed up in advising everyone to select married with 3 dependents as it should be your actual filing status.
TSP doesn't actually calculate the withholding amount. I believe it goes to Department of Treasury to do the withholding calculation.
This may be why they can't answer your question https://www.irs.gov/individuals/tax-withholding-estimator
When I set up installment payments it was all done by paper & faxed in...not sure if that is still an option or not but it took me several times to find someone answering the phone to get the correct answer on withholding. Their directions are totally messed up in advising everyone to select married with 3 dependents as it should be your actual filing status.
TSP doesn't actually calculate the withholding amount. I believe it goes to Department of Treasury to do the withholding calculation.
This may be why they can't answer your question https://www.irs.gov/individuals/tax-withholding-estimator
You can use the appropriate worksheet 1-4 at https://www.irs.gov/pub/irs-pdf/p505.pdf based on you filing status to estimate how much they will withhold. You can adjust the brackets to the 2022 figures if you wish to be more precise. Subtract your estimated calculated amount from your calculated 20% figure to determine how much additional withholdings you need and divide by the number of payments (12 monthly; 4 quarterly). If you are doing life expectancy payments you may want to add a few dollars so you don't have to deal with TSP again next year. I agree with Scout...it is easier to adjust your OPM tax withholdings.Service Outage
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