Guide · 7 min read

Startup idea validation checklist

A working checklist for validating a startup idea: what to confirm before building, what counts as evidence, and what only looks like evidence.

Validation is not a feeling of confidence. It is a short list of things you have confirmed with people outside your own head. This checklist is deliberately ordered: each block is cheaper than the one after it, so you fail early where failing is free.

Before you talk to anyone

You can name the buyer in one sentence, including their role and situation.
You can describe what they do today instead: the actual substitute, not 'nothing'.
You can state the problem in their words, not in your product's words.
You have written down the two or three assumptions the idea depends on.
You know which of those assumptions is cheapest to test.

Conversations

You have spoken to at least five people in the target segment.
You asked what they did last time the problem occurred, not whether they would use your product.
At least one person described a workaround they built themselves, which is a strong signal.
Nobody needed the problem explained to them before they recognised it.
You recorded what they said, not what you concluded.

Enthusiasm in a conversation is not validation. People are generous with encouragement and stingy with money. Look for effort already spent, not agreement freely given.

Willingness to pay

You have said a real number out loud and watched the reaction.
You know what they currently pay for something adjacent.
You know who signs off, since the user and the buyer are often different people.
You have not confused 'that seems reasonable' with 'send me an invoice'.

Distribution

You have named one specific channel, not a list of three vague ones.
You have tested it with a fixed budget of hours before building anything.
You can estimate what one acquired customer would cost in that channel.
The price supports that cost with room left over.

Business shape

You know whether this is recurring or one-off revenue.
You know the per-use costs and which type of account erodes margin fastest.
You can say what stops an incumbent from adding this next quarter.
You can grow it without being personally present in every delivery.

What does not count as validation

Friends and peers saying it sounds great.
A large market size figure from a report.
An AI model agreeing with your framing.
Waitlist signups with no payment intent behind them.
Your own certainty, however strong.

A structured evaluation, including one from Skoora, is a hypothesis with the reasoning shown. It tells you what to test. It is not the test.