How to Handle Money When You're Under 18
You can’t open a business bank account by yourself as a minor, so the clean setup is a custodial account or a joint account opened with a parent, plus a payment tool tied to it, and a spreadsheet that separates business money from your own. That’s the whole answer. The rest of this is how to actually do it without creating a mess you’ll regret in April when taxes come around.
Most of what stops teen founders here isn’t the law. It’s that nobody explained the moving parts. There are only three: where the money lands, how customers pay you, and how you keep track. Get those right and you’re running a real operation with real books, at 15.
Why can’t you open a business bank account as a minor?
Banks require an account holder to sign a legally binding contract, and in almost every U.S. state you can’t be held to a contract until you’re 18. So a bank won’t let a 16-year-old open an account solo. This isn’t the bank being difficult. A signature from someone who can legally walk away from the agreement is a signature they can’t rely on.
There are two normal ways around it, and both involve a parent or legal guardian:
- A custodial account. An adult opens and legally owns the account “for the benefit of” you, and controls it until you hit the age of majority (18 or 21 depending on your state). The money is yours; the adult is the manager on paper. These are usually called UTMA or UGMA accounts, which just stand for the laws that created them.
- A joint account. You and a parent both own the account. You get a debit card, you can log in, you can move money, but an adult’s name is on it too.
For a high school startup that’s collecting small payments, a joint checking account is usually the simplest thing that works. You don’t need a fancy “business” account with monthly fees to sell a $12 product. You need somewhere the money can land that you can actually see and touch.
What do you actually need before you take a dollar?
Less than you think. Here’s the order that avoids wasted steps.
- Talk to a parent first. Every path here needs an adult’s name on something, so this conversation isn’t optional, it’s step one. If that feels awkward, here’s how to talk to your parents about your startup in a way that gets a yes instead of a lecture.
- Open a joint or custodial bank account. Bring the parent, their ID, your ID or school ID, and a Social Security number. Ask specifically for a joint checking account or a custodial account. Online banks and credit unions are often faster than big national branches.
- Decide how customers will pay you. For most teen founders this is Stripe (for card payments on a website), PayPal, Venmo, or a simple Stripe Payment Link. More on the under-18 catch below.
- Connect the payment tool to the bank account so money you collect actually deposits somewhere real, not just into an app balance you forget about.
- Start a money spreadsheet on day one. Two tabs: money in, money out. You’ll thank yourself later.
Notice what’s not on this list: an LLC, a lawyer, a “business” account, an accountant. You almost certainly don’t need a company entity to start selling. If you’re wondering whether you eventually will, read do you need an LLC as a teen entrepreneur before you spend a cent forming one. Short version: not yet.
How do you take payments if you’re under 18?
This is the part that trips people up, because most payment processors say in their terms of service that you must be 18 to open an account. Here’s the honest breakdown.
| Tool | The under-18 reality | Best for |
|---|---|---|
| Stripe | Terms require 18+. The standard move is a parent opens the account with their info and links the bank account; you operate it. | Selling on your own website or a Payment Link |
| PayPal | Also 18+. Same solution: an adult’s account, or a PayPal for the family business. | Invoices, one-off sales, international buyers |
| Venmo / Cash App | Teen accounts exist but are limited for business use; often tied to a parent’s account. | Casual local sales, splitting, tips |
| Gumroad / Lemon Squeezy | Similar 18+ rules; the platform handles checkout for you. | Selling digital products or downloads |
The pattern is the same everywhere: a parent opens the payment account, links it to the bank account you set up together, and you run the day-to-day. That’s not a loophole, it’s exactly how a custodial arrangement is supposed to work. The adult is legally responsible; you do the operating. Be upfront with your parent that their name is on it, because it is, and payments and any tax reporting flow through them.
If you want a deeper walkthrough of the setup, we wrote a whole guide on how to accept payments when you’re under 18. Pair it with this one and you’ll have both the “where money lands” and “how it arrives” halves covered.
One practical tip: don’t collect real card payments until you have something to sell. Plenty of validation happens before you charge anyone. If you’re still testing demand, a presell before you build approach or a simple Payment Link confirms people will pay without a full storefront.
Keep business money separate from your own money
This is the single habit that separates a founder from a kid with a Venmo balance. The moment your startup money mixes with your birthday money and your part-time paycheck, you lose the ability to answer basic questions: Did this thing make money? What did I spend on it? Do I owe taxes?
So draw a hard line:
- One place for business money. The joint/custodial account is the business’s money, even if it’s technically a personal account. Treat it that way.
- Never pay yourself by “just leaving it in there.” If you take profit out, log it as a withdrawal. Future-you needs to see it.
- Log every dollar in and out. A free Google Sheet is enough. Date, what it was, amount, in or out. Sixty seconds per transaction.
Here’s why this matters beyond neatness: if your business nets $400 or more in profit, you may actually owe taxes, even as a minor. That surprises a lot of founders. Whether you pay taxes on teen business income is its own topic, but clean books are what make tax time a 20-minute chore instead of a panic. You cannot file on money you never tracked.
A realistic example
Say you’re 16 and you sell a $9 Notion template for studying. No funding, no company, $0 in the bank to start.
Your setup takes one weekend. Saturday, you and a parent open a joint checking account at a credit union. Sunday, your parent creates a Gumroad account, links that bank account, and you upload your template and set the price. You make a Google Sheet with two tabs. Total cash spent: zero, because most of these tools only take a cut when you actually sell.
First month you sell 30 copies. Gumroad takes its fee, roughly $250 lands in the bank account, and every sale shows up as a row in your “money in” tab. You spent $20 on a Canva subscription for the cover art, which is one row in “money out.” Your profit is obvious because you tracked it. When a college interviewer or a program application asks “how did the business do,” you have a real number instead of a vibe.
That’s the entire game at this stage. You don’t need to be sophisticated. You need to be organized. If money is the thing making you hesitate to start, know that the amount you need is tiny, how much money you actually need to start a business in high school is usually close to nothing.
The quick rules to remember
- You can’t open a business account solo before 18. Use a custodial or joint account with a parent.
- Payment processors require 18+. The standard move is a parent opens it, you operate it.
- Separate business money from personal money from day one, even in a personal account.
- Log every transaction the day it happens. A free spreadsheet beats a shoebox.
- You probably don’t need an LLC to start. Sell first, formalize later.
- If you net $400+, taxes may apply. Clean books make that painless.
This is one of those founder skills that feels boring until the exact moment it saves you. Handling money well isn’t about being rich; it’s about being trustworthy with a dollar, which is the whole job. If you want to build a real company with people who’ll help you set this up correctly instead of guessing, that’s what happens inside the batch0 program. You bring the idea; we help you turn it into something with actual books, actual customers, and a demo day at the end. When you’re ready, apply here. It’s free to apply, and you only pay if you get in.