Seven proven approaches to finding profitable B2B SaaS ideas

Executive overview

Most founders start with an idea; the better starting point is a problem businesses need solved and will pay for. The seven approaches here give you concrete entry points — from personal experience to market observation — each with real examples of companies built this way.

The best SaaS ideas come from proximity to a real problem, not from brainstorming in the abstract.

Five ways to find an unsolved problem

• Scratch your own itch: encounter a problem, search for a solution, find none, build it. Examples: Drip, Basecamp, WP Engine.
• Find a problem at your day job: see a gap, leave, fix it. Tiny Seed companies Riemby, Dealforma, and RefTab all started this way.
• Solve a problem for a spouse, relative, or colleague — Gather, Churn Buster, and MoreAware Software used this approach.
• Poor customer experience as a trigger: CodeSubmit's founder hated contrived interview exercises and built better tooling for employers.
• Find a problem online via Facebook groups, Quora, Slack communities, or support forums — viable but harder without a committed partner.

Translate an existing idea to a new niche

• Take a horizontal tool and focus it on a single vertical (also called land and expand).
• BidSketch launched proposal software specifically for designers in 2009 — existing category, new audience, quick traction.
• Builder Prime took CRM and rebuilt it exclusively for the home improvement industry.
• Vertical focus lets you prioritise features that matter most to one audience before expanding.

Enter a large space with hated competitors

• Big incumbents typically overcharge, under-support, and ship bad products — this creates an opening.
• Drip competed against Marketo, Pardot, and Infusionsoft by offering self-serve pricing, a usable product, and strong support.
• Xero did this against QuickBooks; Shopify against Yahoo Stores; Stripe against Authorize.net.
• You win on UX, pricing model, support, and positioning — not on feature parity.

Build on your network

• A strong network gives you early customer input and access to other audiences — both scarce for new founders.
• Dan Martell launched Clarity.fm by using his founder and consultant network to fill one side of a two-sided marketplace.
• Ask: who do I know in a specific industry, and can they be customers or distribution?

Enter a fast-growing ecosystem

• Ride an existing wave: WooThemes (WordPress themes, 2008), Castos and Squadcast (podcasting tools).
• Bear Metrics launched as a Stripe analytics tool in 2013 — late to analytics, early to Stripe analytics — and sold for ~$5M.
• Key risk: by the time a wave is visible, it may already be crowded. Betting early on a market that stalls is expensive (StaticKit is the cautionary example).

Build on an existing product you already own

• Paying customers signal trust and surface adjacent problems — use that.
• Craig Hewitt turned his WordPress podcast plugin into Castos, now a seven-figure ARR SaaS.
• Ruben Gámez saw Bidsketch users needing better e-signatures and launched Signwell, competing directly with DocuSign.
• Distinguish between products that can scale and "step-one" businesses that are better used as launchpads.

Look at what you paid for at your day job

• List every SaaS subscription from your last job or company — each one is a proven, paying market.
• Derek Reimer noticed Calendly on his expense list, identified scheduling as a large proven market, and built Savical.
• Jordan Gall paid for poor abandoned-cart software, built Cart Hook with better UX, later pivoted to post-purchase upsells, and exited.
• The market is already validated — your job is to compete on execution.