How to Validate a Business Idea Before You Quit Your Job

An idea is validated when people you don't know pay for it, or commit money in advance, at a price that covers your costs. To get there while you still have a job, name the customer and the problem, talk to people who have that problem, deliver the result by hand for a few of them, ask for a deposit or pre-order, and check that the price leaves you a profit. Do it in evenings and weekends, and write down beforehand the result that would end the test.

This page covers testing the idea. Turning a tested idea into a product is covered in how to build a minimum viable product, and writing it up for lenders or partners in how to write a business plan.

Step 1: Name the customer and the problem

Write one sentence: who has the problem, what it costs them now, and what they do about it today. A sentence like owners of small cleaning companies lose an evening a week to scheduling, and use paper calendars is testable. A sentence like small businesses need better software isn't.

In the US, the SBA's market research guidance (page checked October 31, 2026) suggests questions to answer, including "Demand: Is there a desire for your product or service?" and "Pricing: What do potential customers pay for these alternatives?"

Step 2: Talk to people who have the problem

Find at least ten people who fit your sentence and ask about the last time the problem came up, what they did, and what it cost. Don't describe your idea until the end. You're listening for problems they've already tried to solve and money they already spend on them.

Step 3: Deliver the result by hand

Before building anything, offer a few of them the outcome as a service, done by you with tools you already have. If people won't take it when you do the work yourself, don't build a product version yet. If they will, you learn what they actually value.

Step 4: Ask for money, not compliments

Ask for a deposit, a pre-order or a paid pilot. Count a yes with payment, not a promise to use it someday.

If you take orders by mail, phone or online in the US, check the FTC's shipping rules first. Its Business Guide to the Mail, Internet, or Telephone Order Merchandise Rule (September 2011, edited January 2025) says the rule "applies to most goods a customer orders from the seller by mail, telephone, fax, or on the Internet." Its section on what the rule does not cover lists exemptions, including: "The Rule also does not cover services, such as mail order photo-finishing." For orders it does cover, it says: "If you make no shipment statement, you must have a reasonable basis for believing that you can ship within 30 days." If you aren't sure a pre-sale will ship on time, read the guide or ask a lawyer before you take payment.

Step 5: Check the numbers

Work out what one sale earns you after the direct costs of delivering it, and how many sales a month you'd need to replace the income you'd give up. If that number is far beyond what your tests suggest, change the price, the offer or the customer before you go further.

Worked example: a pre-sale test

Sample figures for a one-month test of a meal-planning service:

• Visitors to the sign-up page: 200
• People who joined the waitlist: 18, so 18 ÷ 200 = 9% of visitors
• People who paid a $50 deposit: 5, so 5 ÷ 18 = 27.8% of the waitlist
• Deposits collected: 5 × $50 = $250

Treat five strangers paying as a signal to follow up. Call each of them, ask why they paid, and run the test again with a different group before you rely on it.

Signs to stop or change course

• People describe the problem, but nobody has spent money or time trying to fix it.
• Interest disappears when you ask for a deposit.
• The price buyers accept doesn't cover the cost of delivering it.

Where Billed fits

For a service idea, a paid pilot can start with a quote the buyer accepts. Billed's features page says "your clients can approve or reject your estimates online." When a deposit is due, Billed's invoice software page says: "Connect your Stripe account and every invoice you send gets a pay button, so clients can pay by card."

When this guide isn't for you

If your idea needs a license, regulatory approval or large upfront investment before anyone can buy, a pre-sale test isn't enough; talk to a lawyer or an accountant first. Check your employment contract before you sell anything while you're still employed.

Related Articles

• How to Build a Minimum Viable Product
• How to Write a Business Plan
• How to Price Your Services
• How to Fund Your Startup

Frequently Asked Questions

Can I test an idea on a small budget?

Talk to people who have the problem, deliver the result yourself for a few of them, and ask for a deposit or pre-order. None of those steps needs a finished product.

What counts as validation?

Strangers paying, or committing money in advance, at a price that covers your costs. Compliments and waitlist sign-ups are a start, but they aren't the same as payment.

How much time should I give each test?

Set a deadline before you start, such as one month for each test, and write down which results mean carry on, adjust or drop the idea.

Can I take pre-orders before my product exists?

In the US, the FTC's business guide (September 2011, edited January 2025) says its mail, internet and telephone order rule "applies to most goods a customer orders from the seller by mail, telephone, fax, or on the Internet." It also says: "If you make no shipment statement, you must have a reasonable basis for believing that you can ship within 30 days." Ask a lawyer about your own plans.