What to enter on your W-4 when you're single

If you're single with one job, your W-4 is straightforward: you'll mark yourself as "Single" in Step 1(c), claim one withholding allowance for yourself in Step 2, and leave Steps 3 and 4 blank unless you have other income or dependents. The IRS form is designed so that most single filers with a standard situation can stop there and have the right amount withheld from each paycheck.

The form changed in 2020 and no longer uses the word "allowances." Instead, it asks you to claim a number that represents your personal situation. For a single person with no dependents and only one job, that number is 1 — meaning one withholding allowance for yourself.

Key Takeaways

  • Mark "Single" in Step 1(c) of the W-4 form, and enter 1 in Step 2 to claim yourself as a withholding allowance.
  • Leave Steps 3 and 4 blank unless you have a second job, significant investment income, or dependents you support.
  • If you expect to owe money at tax time, you can increase your withholding by entering a smaller number or adding a dollar amount in Step 4(c).
  • If you expect a large refund, you can decrease your withholding by entering a larger number in Step 2, though this means less money withheld from each paycheck.
  • You can update your W-4 at any time during the year if your situation changes — you don't have to wait until next January.

Step 1: Mark your filing status as Single

Step 1(c) asks you to select your filing status. For a single person, you have one choice: "Single." Do not select "Married Filing Jointly" or any other option unless you are actually married or have dependents that change your status.

Your filing status on the W-4 should match the status you plan to use when you file your tax return. If you're unmarried and have no dependents, "Single" is correct.

Step 2: Claim your personal withholding allowance

Step 2 is where you enter how many withholding allowances you're claiming. For a single person with no dependents and no other income, enter 1. This tells your employer to withhold taxes as if one person depends on your income — you.

Do not leave this field blank. An empty Step 2 will cause your employer to withhold taxes at the highest rate, which usually means you'll get a large refund at tax time. Entering 1 is the standard move for your situation.

Step 3: Account for a second job or spouse's income

Step 3 applies only if you have more than one job or if you're married and your spouse also works. Since you're single with one job, leave Step 3 blank.

If you do pick up a second job later in the year, you can update your W-4 at that employer and use the worksheet in Step 3 to adjust your withholding. But for now, skip it.

Step 4: Claim dependents and other adjustments

Step 4 has two parts. Step 4(a) is for dependents — children or other people you support. If you have no dependents, enter 0 or leave it blank.

Step 4(c) is for "other income" adjustments. If you have investment income, rental income, or other money not covered by withholding, you can enter an amount here to increase your tax withholding. Most single filers with one job leave this blank.

When to adjust your withholding

If you filed taxes last year and owed money, you can reduce that risk by increasing your withholding now. To do this, enter a number smaller than 1 in Step 2 — for example, 0 — or enter a dollar amount in Step 4(c). Either approach tells your employer to withhold more from each paycheck.

If you filed taxes last year and got a large refund, you can decrease your withholding to bring home more money each pay period. Enter a number larger than 1 in Step 2, such as 2 or 3. This means less will be withheld, so you'll owe less at tax time or get a smaller refund. Be cautious with this approach — withholding too little can leave you with a bill you're not prepared for.

Where to submit your completed W-4

Give your completed W-4 to your employer's payroll or human resources department. Most employers now offer online submission through their payroll portal. Some still accept paper forms. Ask your HR contact which method they use.

Your employer must have your W-4 on file before they process your first paycheck, though they can accept updates at any time during the year. If you change jobs, you'll need to fill out a new W-4 for the new employer — your old one does not transfer.

Frequently Asked Questions

What if I leave Step 2 blank?

Your employer will withhold taxes at the highest rate, as if you claimed zero allowances. This usually results in a large refund when you file your tax return, but it also means less money in your paycheck each week. The IRS recommends entering at least 1 for most filers.

Can I change my W-4 after I submit it?

Yes. You can update your W-4 at any time by submitting a new form to your payroll department. There's no penalty for changing it, and the new withholding takes effect on your next paycheck. Many people update their W-4 when their situation changes — a new job, a second job, or a change in income.

Should I enter 0 or 1 in Step 2?

Enter 1 unless you have a specific reason to withhold more. Entering 0 means your employer withholds at the highest rate, which is appropriate only if you expect to owe taxes or want to force yourself to save through a larger refund. For most single filers, 1 is the right choice.

Do I need to fill out a new W-4 every year?

No. Your W-4 stays in effect until you change it. However, the IRS recommends reviewing it each year, especially if your income, dependents, or filing status changed. You can update it whenever you want — there's no annual deadline.

What if I have a side gig or freelance income?

Side income is not subject to withholding, so your W-4 won't account for it. You may want to increase your withholding in Step 4(c) to cover the taxes you'll owe on that income, or you can make quarterly estimated tax payments directly to the IRS. Talk to a tax professional about the best approach for your situation.