W-4 paycheck guide

Step 1 — Filing status

Single / Married filing separately, Married filing jointly, or Head of household. Each uses a different IRS withholding table. Switching from Single to Married Filing Jointly typically lowers federal withholding.

Step 2 — Multiple jobs / both spouses work

If you (or you and your spouse) have more than one job, Step 2 helps prevent under-withholding. There are three options: use the IRS Tax Withholding Estimator, complete the Multiple Jobs Worksheet, or check the box if both jobs pay similarly. Checking Step 2c uses different (higher) withholding tables.

Step 3 — Dependents

Each qualifying child under 17 = $2,000 annual credit; each other dependent = $500. These reduce annual withholding by the credit amount. Claiming dependents you do not have lowers withholding now — and can leave you owing tax (and possibly a penalty) at year end.

Step 4(a) — Other income

Annual income from interest, dividends, side jobs you do not want a separate W-4 for. Adds to your federal withholding base.

Step 4(b) — Deductions

Annual deductions above the standard deduction (e.g., large itemized deductions). Reduces federal withholding base.

Step 4(c) — Extra withholding

A flat dollar amount taken from each paycheck on top of normal withholding. Useful if you want to pay more in to avoid owing at filing.

Common reasons your paycheck changed after a W-4 update

• You changed filing status.
• You added or removed dependents.
• You added Step 4(c) extra withholding.
• You checked or unchecked Step 2(c).
• Your employer applied the change mid-period.

What we cannot tell you

How much extra to withhold for your specific situation. That depends on total annual income, deductions, credits, and other withholding sources. The IRS Tax Withholding Estimator is the official tool; for high-stakes decisions, speak with a CPA or enrolled agent.