Withholdly is a paycheck-based federal tax withholding service designed to help people choose what to enter on their W-4. It uses information from a user’s paycheck to provide guidance on withholding, aiming to make federal tax payments more precise than simply guessing. By helping users adjust their W-4, Withholdly seeks to reduce the chance of having too much withheld from each paycheck while also helping them avoid an unexpected tax bill in April.

The site illustrates its approach with a federal withholding example: on gross pay of $62,000, it shows $9,860 in federal withholding and $52,140 remaining in paychecks. Withholdly describes its service as a way to understand how much to withhold and keep more accurate amounts flowing through regular pay. The company’s website indicates that the service is opening soon and invites visitors to receive a notification. It also provides privacy, terms, cookies, and disclaimer information.