Do I owe taxes on side hustle income?

Yes. Income from a side hustle is generally taxable, and if your net self-employment earnings are $400 or more for the year you must file and pay self-employment tax (15.3%) on top of income tax. Payment apps and platforms may also report your earnings to the IRS on Form 1099-K or 1099-NEC.

When does a hobby become a business for taxes?

The IRS looks at whether you run the activity to make a profit — factors include keeping good records, your expertise, time and effort, and a history of profit. A genuine business can deduct expenses against its income; a hobby generally cannot deduct expenses, though hobby income is still taxable.

Do I have to pay quarterly taxes on side income?

If you expect to owe at least $1,000 in tax for the year after withholding, the IRS wants quarterly estimated payments. If you also have a W-2 job, you can instead raise your paycheck withholding to cover the side-hustle tax and skip separate quarterly payments.

Can I deduct side hustle expenses?

If your side hustle is run as a business, yes — ordinary and necessary expenses like supplies, platform fees, mileage, software, and a portion of your phone reduce your taxable profit, which lowers both self-employment tax and income tax. Keep receipts and a contemporaneous mileage log.

How do I know if my side hustle is worth it?

Calculate your true hourly wage: take your revenue, subtract all expenses and the taxes you owe, then divide by every hour the hustle actually takes — including unpaid admin, driving, listing, and communication time. Compare that number to what your time is worth elsewhere.

Is my side hustle actually profitable?

Your side hustle "made $1,000 last month." But after the platform's cut, your mileage, the taxes, and the ten hours you didn't count — what did it really pay per hour? That number, your true hourly wage, is the one that tells you whether to keep going, raise prices, or quit.

Last reviewed: June 2026

The quick answer

Most side-hustle math stops at revenue minus a few obvious costs and calls the rest profit. The real test is your true hourly wage:

True hourly wage =

(revenue − all expenses − taxes you owe) ÷ every hour the hustle takes

The two pieces people skip are taxes (a side gig owes self-employment tax plus income tax on its profit) and unpaid time (the driving, listing, shipping, messaging, and bookkeeping that never show up on an invoice). Add them back and a hustle that looked like $25/hour can quietly be worth $12.

The three things that quietly eat your profit

1. Expenses — more than you think

Platform and payment fees, supplies and materials, mileage and vehicle wear, software subscriptions, shipping, and the business-use share of your phone and internet all come out before profit. For drivers and sellers especially, these add up fast.

2. Taxes — the part with no withholding

Nobody withholds tax from a side hustle. On your net profit you owe 15.3% self-employment tax (Social Security and Medicare) plus federal — and often state — income tax at your marginal rate. Because the hustle stacks on top of your day-job income, that income tax is charged at your highest rate, not your lowest.

3. Unpaid time — the hidden denominator

The hours you bill are rarely the hours you spend. A one-hour delivery might include 25 minutes of unpaid "deadhead" driving back. A $40 sale might take 30 minutes to photograph, list, message, pack, and ship. Counting only the paid minutes makes your hourly rate look far better than it is.

A worked example

A reselling hustle, one month

Revenue: $1,000
Expenses (inventory, fees, shipping, supplies): −$350
Net profit: $650
Taxes set aside (~25% of profit): −$160
Take-home: ≈ $490
Hours actually worked (sourcing, listing, packing, shipping): 35

≈ $14 per hour — not the $29 the revenue suggested

Fourteen dollars an hour might be completely fine — if you enjoy it, it's building a skill, or it's scaling toward something bigger. Or it might be a sign to raise prices, cut the time-wasting parts, or spend those hours elsewhere. The point isn't that the number is bad; it's that you should know it.

Special cases worth a closer look

For drivers

Track deadhead miles (driving without a paying passenger or order) and idle waiting time — both are real costs that platforms don't pay for. Your mileage deduction helps at tax time, but unpaid driving still drags your true hourly wage down.

For sellers

The labor of listing, photographing, messaging buyers, and packing is the hidden cost of reselling. A higher price per item matters less than how many minutes each sale really consumes from start to shipped.

Find your true hourly wage

Plug in your earnings, expenses, and the hours your hustle really takes, and our free Side Hustle Profit Calculator shows what you actually net per hour — after taxes and unpaid time — with tax figures from the same engine as our quarterly estimator. Nothing leaves your browser.

Find my true hourly rate →

Frequently asked questions

Do I owe taxes on side hustle income?: Yes. Side income is generally taxable, and if your net self-employment earnings reach $400 for the year you must file and pay 15.3% self-employment tax plus income tax. Platforms may report your earnings to the IRS on Form 1099-K or 1099-NEC.
When does a hobby become a business?: The IRS looks at whether you're trying to make a profit — records, expertise, effort, and a history of profit all matter. A business can deduct expenses; a hobby generally can't, but its income is still taxable.
Do I have to pay quarterly taxes on side income?: If you expect to owe $1,000 or more for the year, yes. With a W-2 day job, you can instead raise your paycheck withholding to cover it and skip separate quarterly payments.
Can I deduct side hustle expenses?: If it's run as a business, yes — supplies, fees, mileage, software, and the business share of your phone reduce your taxable profit, lowering both self-employment and income tax. Keep receipts and a mileage log.
How do I know if my side hustle is worth it?: Find your true hourly wage — revenue minus all expenses and taxes, divided by every hour it takes including unpaid admin — and compare it to what your time is worth elsewhere.