Nine lessons from investing in 170+ B2B SaaS companies

Executive overview

Most B2B SaaS companies don't fail — they just grow slowly. Rob Walling shares patterns observed across five years and 170+ investments through Tiny Seed, his bootstrapped SaaS accelerator.

The central insight: vertical and orthogonal SaaS consistently outperforms horizontal plays, and the structural value of ARR is larger than most founders realise.

Even among companies that have fully exited or shut down, 43% of founders are now millionaires.

B2B SaaS failure and exit rates

• Only ~2% of Tiny Seed companies have been written off (shut down without a sale)
• 4% have exited — sold for enough that Tiny Seed at least returned its investment
• The "long, slow SaaS ramp" means five years is still early; most companies are still in play
• Lower failure rate than traditional venture funds, attributed partly to portfolio selection

The compounding value of ARR

• Adding 1K MRR ≈ $60K added to company value at a 5x exit multiple
• Adding 5K MRR ≈ $300K added to company value in a single month
• Value is realised either through ongoing profit distributions or a sale event
• The moment of seeing a real acquisition offer changes how founders think about selling

The Tiny Seed millionaire rate

• 43% of founders whose companies are no longer operating (sold or shut down) are now millionaires
• This includes exits where Tiny Seed itself did not achieve a strong return
• A $1M outcome is life-changing even if it is not "never work again" money
• First-time founders especially underestimate how much this changes financial security

Vertical and orthogonal SaaS outperform horizontal

• Horizontal SaaS targets every business; vertical SaaS targets a specific industry; orthogonal SaaS targets a specific role across industries
• Horizontal companies compete against well-funded incumbents with unclear ICP
• Vertical and orthogonal companies have easier cold outreach, better ad targeting, and clearer customer identity
• In Tiny Seed's portfolio: vertical/orthogonal companies show faster growth, lower churn, and net negative churn more frequently
• Exit multiples also appear higher — strategic and PE buyers understand the value of niche dominance

Founder exit intentions shift when money becomes real

• Survey results: ~80–85% of Tiny Seed founders want a big exit; only 15–20% want long-term profit extraction
• Selection bias applies — lifestyle bootstrappers are unlikely to take Tiny Seed funding
• Founders who say they want to run forever often shift when they see a real offer in writing
• The visceral reaction to seeing a seven-figure acquisition number is consistently underestimated in advance

Founder count does not predict success

• Among Tiny Seed's seven- and eight-figure ARR companies: 53% single founder, 33% two founders, 14% three or more
• Nearly identical to the broader independent SaaS ecosystem (51% / 34% / 15%)
• Founder count alone is not a reliable signal of outcome

Cap table hygiene is critical

• Companies with founders owning less than 70% are difficult or impossible to fund
• Common problems: departed co-founder retaining unvested equity, predatory early angel terms, disproportionate equity to advisors
• Example: a €50K angel check for 25% equity at a €200K valuation makes the company uninvestable
• Cap table issues are common enough that Tiny Seed requests it after the first interview round
• A founder owning 25% of their own company raises serious red flags about judgment and decision-making

Subsequent fundraising after Tiny Seed

• Pre-2022: roughly one-third of portfolio companies raised additional funding after Tiny Seed
• Post-2022 (following valuation crash): closer to one in four
• Raising is optional — companies choose based on growth trajectory and ambition
• Six-co-founder applications and 25%-equity "founders" are red flags that have appeared in practice

Most common founder advisory topics

1. Pricing — raising prices, fixing value metrics, building confidence in charging more
2. Plateau-breaking — diagnosing why growth has stalled (single marketing channel, high churn, tapped-out market, lack of product-market fit)
3. Co-founder disputes — one founder leaving, buyout structuring, equity recapture; treated like a business divorce
4. Fundraising or exit decisions — how to think about the choice, timing, valuation expectations, and next steps