Quick Answer
For side hustlers earning under $10,000 in freelance income, increasing W-4 withholding is usually simpler than quarterly payments. You need roughly 25-30% more withheld from your day job to cover self-employment taxes on 1099 income, which averages about $15.30 in extra withholding per $100 of freelance earnings.
Best Answer
James Okafor, Self-Employment Tax Specialist
Best for people with a day job who freelance on the side
How much freelance income triggers the decision?
If your 1099 income will be under $10,000 for the year, increasing W-4 withholding from your day job is usually the smarter choice. Above $10,000, quarterly payments often make more sense because the withholding amounts get too large relative to your W-2 paycheck.
The math is straightforward: you'll owe roughly 25-30% of your freelance income in combined federal income tax and self-employment tax, depending on your total income level.
Example: $6,000 side hustle with $60,000 W-2 job
Let's say you have a $60,000 W-2 job and expect $6,000 in freelance income this year:
You'd update your W-4 to withhold an additional $86 per paycheck. This covers everything automatically without quarterly payment deadlines.
W-4 withholding vs. quarterly payments comparison
Key factors that determine the better choice
How to calculate the extra withholding amount
1. Estimate total 1099 income for the year
2. Calculate self-employment tax: 1099 income × 15.3%
3. Calculate additional federal income tax: 1099 income × your marginal tax rate (12%, 22%, 24%, etc.)
4. Add state income tax if applicable (varies by state)
5. Divide total by number of remaining paychecks to get per-paycheck withholding increase
What you should do
Start by estimating your total freelance income for the year. If it's under $10,000 and relatively steady, update your W-4 using the IRS Tax Withholding Estimator. If it's over $10,000 or highly variable, set up quarterly estimated tax payments instead.
Use our quarterly estimator tool to calculate exactly how much you need to pay and when, whether through W-4 withholding or quarterly payments.
Key takeaway: Side hustlers earning under $10,000 in freelance income can usually handle taxes more simply by increasing W-4 withholding by roughly $15-20 per $100 of expected freelance income, avoiding quarterly payment deadlines entirely.
Key Takeaway: For side income under $10,000, increasing W-4 withholding by roughly $15-20 per $100 of freelance income is simpler than quarterly payments.
W-4 withholding vs. quarterly payments for different income levels
| Income Level | W-4 Withholding (Monthly) | Quarterly Payment | Best Choice |
|---|---|---|---|
| $3,000 freelance | $64 extra withholding | $225 quarterly | W-4 withholding |
| $10,000 freelance | $214 extra withholding | $750 quarterly | Either works well |
| $25,000 freelance | $536 extra withholding | $1,875 quarterly | Quarterly payments |
| $50,000+ freelance | $1,070+ extra withholding | $3,750+ quarterly | Quarterly payments |
More Perspectives
James Okafor, Self-Employment Tax Specialist
Best for people whose primary income comes from freelancing
Why quarterly payments make more sense for full-time freelancers
As a full-time freelancer, you don't have the luxury of W-2 withholding to lean on. Quarterly estimated tax payments become your primary way to stay current with taxes throughout the year.
The IRS expects you to pay taxes as you earn income, not just at year-end. If you owe $1,000 or more in taxes when you file, you may face underpayment penalties unless you've made adequate quarterly payments.
The safe harbor rule for quarterly payments
To avoid penalties, you need to pay either:
Most freelancers find the "100% of last year" rule easier to work with because it's a known number.
Example calculation for $80,000 freelance income
If you expect $80,000 in freelance income:
This assumes you're single with no other major deductions. Your actual rate may vary based on deductions and filing status.
What you should do
Set up quarterly estimated tax payments through EFTPS (Electronic Federal Tax Payment System) or use tax software that handles the payments automatically. Track your income monthly so you can adjust payments if your income varies significantly from estimates.
Key takeaway: Full-time freelancers should make quarterly payments equal to 100% of last year's tax liability to avoid penalties, typically ranging from $2,000-$15,000+ per quarter depending on income level.
Key Takeaway: Full-time freelancers should make quarterly payments equal to 100% of last year's tax liability to avoid penalties.
James Okafor, Self-Employment Tax Specialist
Best for people in their first year of freelancing
First-year freelancers have unique advantages
In your first year of freelancing, you have some flexibility that experienced freelancers don't. Since you had no freelance income last year, the "100% of last year's tax" safe harbor rule doesn't apply in the traditional sense.
However, you still need to avoid owing $1,000+ when you file, or you may face underpayment penalties.
Start simple, then optimize
If you're new to freelancing and still have W-2 income, start by increasing your W-4 withholding. This gives you time to learn the quarterly payment system without penalty risk.
As a rough guideline, set aside 25-30% of each freelance payment for taxes. This covers both self-employment tax (15.3%) and federal income tax (varies by bracket).
When to switch to quarterly payments
Consider switching to quarterly payments if:
What you should do
Start by tracking every freelance payment and setting aside 25-30% for taxes in a separate account. If you're still employed part-time, increase W-4 withholding first. Once you understand your income pattern, transition to quarterly payments.
Key takeaway: New freelancers should start by setting aside 25-30% of each payment for taxes and use W-4 withholding if they still have W-2 income, then transition to quarterly payments as income grows.
Key Takeaway: New freelancers should start by setting aside 25-30% of each payment for taxes and use W-4 withholding initially if possible.
Sources
- IRS Publication 505 — Tax Withholding and Estimated Tax
- IRS Form 1040-ES — Estimated Tax for Individuals
Reviewed by James Okafor, Self-Employment Tax Specialist on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.