Testing a business idea

Find out if it works before you build it.

Most ideas fail on arithmetic, not ambition. Sketch out what you'd sell, what it would cost, and who you'd need — then look at the profit, cash and funding the idea actually produces.

Test your idea free See how forecasting works
20 min To a first complete forecast
$0 Spent on the business before you know
3 Statements telling you whether it holds up
The job

You need an answer, not a spreadsheet

At this stage the question is simple: does this make money, and how long until it does? Building a model from scratch to answer that is a week of work you don't have and a skill you may not want.

Feasy Pro gives you the structure. Describe the business in plain language — units and prices, or hours and rates, or subscribers and monthly charges — and the engine produces the answer with the accounting handled for you.

Founders sketching unit economics on craft paper
Start faster

You don't have to start from nothing

Forecast Starter looks at your business type and proposes the revenue streams and expenses a business like yours usually has — a coffee shop gets drink sales, food sales, rent and utilities as a checklist to accept or ignore.

It's deterministic and rules-based: instant, auditable, and it runs without sending your data to an external model. Think of it as a prompt for your own thinking rather than an oracle.

  • Suggested revenue streams for your business type
  • The expense categories people commonly forget
  • A sanity check that flags a services business with no staff modelled
Revenue model sketch with four stream icons
Iterate

Change one number. See everything move.

Testing an idea means asking what-if repeatedly. What if the price is $8 rather than $12? What if the second hire waits six months? What if customers pay on 60-day terms?

Every one of those changes ripples through the P&L, balance sheet and cash flow at once. You aren't rebuilding formulas between scenarios — you're just changing your mind and looking at the result.

The honest outcome is sometimes that the idea doesn't work at the numbers you assumed. That is a good week's work, not a failure.

Sticky notes resolving into a clean forecast sheet

Where to go next

Financial forecast The four ways to model how money arrives Business brief Write the idea down before you model it Raising funding When the idea checks out and you need capital Guide: forecasting revenue Where to start if you've never built a model
I stopped babysitting a 40-tab spreadsheet the week we switched. Unit sales, people, and financing finally live in one place — and the P&L updates without me rewriting formulas.
Mei Chen
Founder · Singapore

Common questions

  • No — that's the point. Put in your best guess and see what it implies. A forecast built on rough assumptions still tells you which assumptions actually matter, which is exactly what you need to go and research.

  • Yes. Accounts support multiple companies, so you can keep a separate model per idea or per scenario and compare them. Additional businesses are $9/month each on either plan.

  • It tells you what your assumptions imply — profit, cash, break-even, runway — and flags common modelling mistakes. Whether the assumptions are right is still your judgement, and no software should pretend otherwise.

Ready to see the numbers?

Your forecast is 20 minutes away.

No spreadsheets. No accountant required. Just your assumptions — and the complete financial picture that follows.

Start for free See how it works

Three statements · Always in balance · Export anytime