W4 or 401K

Forum|Forum|26 days ago
May 13, 2026
1 reply
1 view

Is it better to withhold more taxes on W4 or contribute additional pretax dollars to avoid paying taxes back every year when filing?

Ask the Experts - W4 - May 2026

SwapnaM

Employee Tax Expert

It really comes down to whether you want to lower your bill or just correct your math. Pre-Tax contributions lower your tax bill whereas W-4 withholding controls when you pay tax.

W‑4 (withholding more or less): Changes how much tax is taken from each paycheck: It does NOT reduce your taxes. It just helps you avoid owing later.

Pre‑tax contributions (401k, HSA, etc.): Reduces your taxable income. This actually lowers your total tax bill.

Use Pre-Tax Contributions IF:

You aren't currently "maxing out" your retirement accounts.
You want to pay less total tax to the government this year.
You can afford to have that money locked away until retirement.

Use Extra Withholding IF: You already contribute heavily to retirement but still owe every year. You need a simple "safety net" to ensure you break even.

Most high-earning households do both. They maximize their 401(k) to lower their tax bracket and then use a small amount of extra withholding in Step 4(c) of W4 to account for any remaining gaps.

@esag24 Thanks for the question!!

**Say "Thanks" by clicking the thumb icon in a post. **Mark the post that answers your question by clicking on "Mark as Best Answer".