For SaaS founders
Recurring revenue should count as recurring income.
Bootstrapped SaaS founders have the kind of predictable MRR a bank should love. But it never shows up where it counts. Zing is built around the business doing the numbers today, turning the spend your product already runs on into a life that's visibly ahead.
MRR
$40k
Predictable monthly
Card-routable cost base
~$12k
Cloud + AI + tooling + contractors
What a bank sees
$0
No W-2. Thin personal file.
The cost stack
Every line below is already working for you
AWS / GCP / Cloudflare
Compute, storage, edge. Scales with usage.
Vercel / Netlify / Render
Frontend hosting and deploy infra.
OpenAI / Anthropic / Replicate
Model API spend. Often the fastest-growing line.
Pinecone / Weaviate
Vector DB infra for AI-native features.
Stripe / Paddle
Billing and tax. Fees show up as card-routable spend.
Linear / Notion / Slack
Team operating layer.
The AI line is the new ads line
The fastest-growing variable cost in modern SaaS isn't ads. It's model API spend. Every founder shipping AI features is now running OpenAI, Anthropic, and inference infra at scale. Zing treats that spend as first-class: the same money you already burn, finally pulling its weight for you.
What's the best card for a bootstrapped SaaS founder?
If you're VC-backed with a finance team, the corporate card platforms were built for you. If you're bootstrapped, nothing was, and that's the gap. Your AWS, model API, and growth spend scales every month while your personal financial access stays frozen at whatever your credit file said years ago. Zing is built for the SaaS founder personally: recurring revenue treated as the income it is, and the infrastructure spend you already run quietly working for your life instead of stopping at the accounting software. Free waitlist open at $1,000/month in verified revenue today, $5,000/month at launch.
Free waitlist. Get in early
It's free to join. Right now the waitlist is open to founders at $1,000/month in business revenue. At launch the bar rises to $5,000/month, so the early birds lock in the lower threshold.