How We Calculate Your Side Hustle Taxes
Hustle.tax provides free, instant tax estimates for the 70+ million Americans earning side hustle income.
Our Mission
Side hustles are growing. From rideshare and delivery drivers to freelancers and online sellers, more Americans than ever are earning 1099 income alongside their traditional jobs. Yet understanding self-employment tax obligations remains confusing and inaccessible.
We built Hustle.tax to demystify side hustle taxes. Our calculator provides instant, accurate estimates so you can plan ahead and avoid surprises at tax time.
Our Methodology
Our calculator uses current IRS formulas and state tax data to estimate your tax liability:
- Self-Employment Tax: 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net self-employment income
- Federal Income Tax: 2025 IRS tax brackets based on filing status
- State Income Tax: Current rates for all 50 states plus DC
- QBI Deduction: 20% Qualified Business Income deduction for eligible filers
The calculator assumes standard deduction and does not account for itemized deductions, tax credits, or complex situations like multiple businesses or retirement contributions.
Data Sources
All tax data is sourced from official government publications and verified against multiple sources:
- Federal Tax Brackets: IRS Revenue Procedure 2024-40
- Self-Employment Tax: IRS Self-Employment Tax Guide
- State Tax Rates: Individual state Department of Revenue websites
- Standard Deductions: IRS 2025 Inflation Adjustments
Limitations
Our estimates are designed to give you a general idea of your tax liability. They do not account for:
- Itemized deductions (mortgage interest, charitable donations, etc.)
- Tax credits (child tax credit, education credits, etc.)
- Retirement contributions (SEP IRA, Solo 401k)
- Health insurance deductions
- Multiple income sources with different tax treatments
- City or local income taxes
- Alternative Minimum Tax (AMT)
Important Disclaimer
This calculator provides estimates for informational purposes only. It is not tax, legal, or financial advice. Tax laws are complex and change frequently.
Your actual tax liability may differ based on your complete financial picture. We strongly recommend consulting with a qualified tax professional (CPA, Enrolled Agent, or tax attorney) for personalized advice.
By using this calculator, you acknowledge that Hustle.tax is not responsible for any decisions made based on these estimates.
Who Built This
Hustle.tax was created by a team passionate about making tax information accessible to everyone. We understand the challenges side hustlers face—balancing a day job while building something on the side, and trying to navigate the complexities of self-employment taxes.
Our goal is to provide a simple, accurate tool that helps you understand your tax obligations without the complexity (or cost) of professional tax software. While we're not CPAs or tax attorneys, we've built this calculator using official IRS guidelines and verified data sources.
Keeping Data Current
Tax rates and brackets are updated annually when the IRS releases inflation adjustments (typically in late October for the following tax year). State rates are monitored throughout the year as legislatures make changes. Our current data reflects 2025 tax year rates.
Contact Us
Have a question, found an error, or want to suggest a feature? We'd love to hear from you.
Email us at: hello@hustle.tax
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