How to Find a SaaS Worth Building: The 10-Question Checklist

Most SaaS ideas fail the same few tests. Not because the founders were not smart or hardworking, but because the idea itself had structural problems that made success unlikely before a single line of code was written. This checklist is designed to surface those problems early — when fixing them is free.

Run every idea you are seriously considering through these 10 questions before you build anything. A strong idea passes at least 8 of 10. An idea that passes fewer than 6 needs significant revision before it is worth your time.

The 10-Question SaaS Idea Checklist ✅

Question 1: Does a paying audience exist?

Can you name a specific group of people or businesses who would pay for a tool that solves this problem? Not "anyone who" — a specific, identifiable segment you could find, reach, and sell to. If you cannot describe the buyer in one sentence, the market is not defined enough to build for.

Question 2: Do they currently pay for something to solve this?

If your target audience is already paying for something — a competitor, a workaround, a consultant, a spreadsheet maintenance workflow — that is strong evidence the problem is real and worth paying for. If nobody is currently paying anything to address this problem, the burden of proof that people will pay you is much higher. Existing spend is the best validation signal available.

Question 3: Can you reach them to validate?

Before you build, you need to talk to 10-20 people in your target audience. Can you actually find and reach them? If the answer is no — because the audience is inaccessible, anonymous, or too expensive to reach — you cannot validate before building and you cannot acquire customers later without solving an expensive distribution problem. Accessibility of the audience is a go/no-go factor.

Question 4: Is the problem recurring?

SaaS is a recurring revenue business. The problem your product solves needs to be a problem people face repeatedly — daily, weekly, monthly — not once. A one-time problem produces one-time purchases, not subscriptions. Ask: if a user solved this problem completely with your tool this month, would they need to use it again next month? If no, you have a product but not a SaaS business.

Question 5: Can you build an MVP in 4-8 weeks?

An MVP that takes 6 months to build before you can validate anything is a significant risk for a solo founder. The longer you build before getting user feedback, the more likely you are to build the wrong thing. If your honest estimate is more than 8 weeks of solo development, either scope down to the truly minimum version, or be explicit about the risk you are taking on before you have validated demand.

Question 6: Is the market growing?

Entering a growing market gives you tailwind. Entering a flat or declining market means every customer you win comes directly at the expense of a competitor — which is a much harder growth path for a solo founder. Check: are there more companies, tools, and conversations about this problem space this year than there were two years ago? Growth is not required, but it substantially changes the difficulty of building traction.

Question 7: Is the competition dead or declining?

If competitors exist, assess their trajectory. A competitor that has not shipped meaningful features in two years, has declining reviews, or is clearly not investing in the category is a healthier landscape than a well-funded competitor actively improving. You do not need no competition — you need competition that has left a gap you can credibly occupy. Define that gap before you proceed.

Question 8: Can you charge $30+/month?

At $30/month per customer, you need 278 customers to reach $100k ARR. At $10/month, you need 833. For a solo founder, the economics of very low-price SaaS are brutal — the support burden per dollar of revenue is high, and you are likely competing on price with tools backed by larger teams. If your target audience will not pay at least $30/month for a significantly valuable product, examine whether the audience can support a sustainable solo business.

Question 9: Do you understand the domain?

Building in a domain you understand deeply gives you a significant advantage: you know the vocabulary, the workflows, the buyer's decision process, and the existing tools landscape. Building in an unfamiliar domain means you will spend 6-12 months learning things an insider already knows — and you will make expensive product decisions based on that incomplete knowledge. Domain familiarity is not required, but it substantially increases your probability of building the right thing faster.

Question 10: Will this still interest you in 2 years?

Building a SaaS business takes longer than most founders expect. Two years of working on a problem you find genuinely interesting is survivable. Two years on a problem you chose purely for financial reasons, without inherent interest in the domain or the users, is very difficult to sustain through the inevitable hard periods. This is not a question about passion — it is a question about realistic sustainability of your own motivation.

Scoring Your Idea

Count the number of questions you answered with clear, evidence-backed yes answers.

Frequently Asked Questions