SaaS Idea Validation Checklist

Step 1 — Find a real, paid-for pain (2–3 days). Pick a boring B2B category (invoicing, scheduling, inventory, compliance, etc.) and read 1–2 star reviews on G2/Capterra. Write down complaints that repeat across many reviewers. Cross-check the same complaints on Reddit and in Upwork job postings. The strongest signal is people already spending money on a bad tool or paying a freelancer to do the task manually — that’s revealed preference, not opinion.

Step 2 — Talk to 10–15 real people, not 10 (about a week). DMs alone rarely get honest replies, so use any channel that works (LinkedIn, communities, email). Don’t ask “would you pay $30–50/month?” — that gets fake yeses. Instead ask: “When did this problem last cost you time or money, and what did you do about it?” If they can’t give a specific story from the last couple of weeks, the pain isn’t sharp enough.

Step 3 — Look for budget and a workaround, not enthusiasm. A good signal is someone saying “I pay a VA $400/month for this” or “we built a messy spreadsheet to handle it.” That tells you the problem is real and anchors your pricing. Polite interest with no current spending or workaround = weak signal.

Step 4 — Get a real commitment before you build. Treat a verbal “yes” as nearly worthless. Aim for a pre-order, a paid pilot, a deposit, or at minimum a clear “send me the link the day it’s live and I’ll pay.” If a handful of people won’t commit anything, rethink the idea before writing code.

Step 5 — Build the ugliest version that solves one thing (2–3 weeks). Scope it to the single biggest complaint. No dashboard, onboarding, or settings — just fix the one painful thing. Manual work behind the scenes is fine at this stage if it gets a paying user faster.

Step 6 — Charge from day one and watch retention. Get money in immediately, even from one user. Early growth lies; retention tells the truth. If people sign up and leave within weeks, that’s a product problem to fix before spending on marketing.