Turnstile

Turnstile Software Inc. is a San Francisco-based software company that sells a quote-to-cash platform for sales-led B2B SaaS companies. The product covers the full revenue lifecycle in four modules: quoting (a drag-and-drop quote builder with built-in e-signature, CRM sync, instant checkout and support for flat-fee, tiered, usage-based, multi-year ramp and custom pricing), subscription and account management (visibility into active, upcoming and lapsed subscriptions, automated amendments for upsells, downgrades and terminations, and API-based provisioning of entitlements), billing (invoices generated automatically from accepted quotes on monthly, quarterly, annual or custom schedules, with prorated mid-cycle changes and usage-based charges), and financial reporting (real-time ARR, MRR, bookings, AR aging and drill-down reporting plus automated revenue recognition).

The company positions the platform as a single system of record for agreed commercial terms: when terms change mid-contract, users set an effective date and invoices and reporting are recalculated automatically. Turnstile uses AI to convert deal terms into structured data, either entered directly or extracted from existing contract documents, and integrates with CRM, ERP, billing and tax providers. It advertises SOC 2 and states that most customers are live in under a day via guided self-service setup rather than a consultant-led implementation. The company also markets "Turnstile MCP" for combined human and agent teams.

Earlier public material described Turnstile as building a modern stack for companies adopting and scaling usage-based pricing, operating as a small, fully remote team with practices including SF-level pay regardless of location, unlimited PTO and a four-day core schedule with Fridays reserved for focused work.

Founding story

The founders say they built Turnstile after experiencing quote-to-cash pain firsthand at Second Measure, where billing spreadsheets became load-bearing infrastructure and reconciliation required manual deep dives to trust internal numbers. They cite founders discovering six- to seven-figure revenue leakage from missed or incorrect billing as the problem the product addresses.

Business model

B2B software sold on a subscription/usage basis to SaaS companies. The published self-serve plan is a $100 per month platform fee plus 0.6% of billing volume, with custom packages for companies with large billing volume or unusual business models; a free trial and startup-friendly pricing are offered.

Recurring platform fee plus a percentage of customer billing volume processed through the system, with negotiated custom pricing at the high end.

Traction

Named early customers include Crafting, Reform, Brellium, Trayd and atronous.ai, with published customer stories for atronous and Crafting and testimonials from executives at customer companies. Marketing claims include quotes created in 60 seconds, a 90% reduction in manual work and zero billing errors.

Latest developments

On 5 February 2026 Turnstile launched its quote-to-cash platform with $29 million in funding from First Round, OMERS Ventures, Illuminate Financial and angel investors, describing the round as a Series A intended to accelerate the product roadmap and go-to-market expansion. Planned work includes agentic dunning for collections, agentic approvals, a conversational interface for revenue operations, and deeper AI ingestion of existing contracts. The company has also announced Turnstile MCP for human-plus-agent teams.