The Startup SaaS Trap
Startups love signing up for tools. Every founder has experienced the creep: Slack, Notion, Linear, Figma, HubSpot, Stripe, Loom, Zoom, Superhuman, Calendly, Zapier... and suddenly you're spending $3,000/month on software before your first customer.
The best startup stack is the smallest one that gets the job done. Here's how to build it.
The Five Layers Every Startup Needs
1. Communication
Slack (Free → Pro $7.25/user/month)- Free tier covers most early-stage needs (90 days of message history)
- Upgrade to Pro when message history matters
- Discord — Free, no message limits, popular with technical and community-first teams
- Microsoft Teams — If you're using Microsoft 365 already
2. Project Management and Documentation
Notion (Free → Plus $10/user/month)The free plan handles docs, wikis, and basic project tracking for small teams. Upgrade to Plus when you need more guests and admin features.
Linear (Free for early-stage, $8/user/month after)Best issue tracker for software teams. Faster and more opinionated than Jira. Free for startups with fewer than 250 issues.
Figma (Free → Professional $12/editor/month)Essential for product and design teams. The free plan (3 files) covers early-stage product design.
Layer 2 cost: $0–20/user/month3. Sales and CRM
HubSpot CRM (Free)HubSpot's free CRM is genuinely useful for tracking deals, contacts, and email outreach. Stay free until you need automation (then evaluate paid tiers vs. alternatives).
Alternatives:- Pipedrive ($14.90/user/month) — Simpler and more sales-focused than HubSpot
- Attio (free early-stage tier) — Modern CRM built for startups
4. Finance and Operations
Stripe — Payment processing for SaaS and e-commerce (2.9% + 30¢ per transaction; no monthly fee) Mercury — Business banking built for startups (free, FDIC insured, no minimums, integrates with Stripe) QuickBooks Online or Xero ($15–35/month) — Accounting for your bookkeeper or accountant Gusto ($40/month + $6/employee) — Payroll, when you hire your first employee Ramp or Brex — Corporate cards with spend management (free; earn cashback) Layer 4 cost: $0–80/month (before payroll)5. Developer and Infrastructure
GitHub (Free → Team $4/user/month) — Version control, issue tracking, CI/CD via GitHub Actions Vercel / Railway / Render — Hosting for web applications (free tiers available for low traffic) AWS / Google Cloud — For more complex infrastructure; use free tiers aggressively Sentry — Error monitoring (free for small teams) Postman — API testing (free) Layer 5 cost: $0–50/monthThe Lean Startup Stack (Year 1)
| Layer | Tool | Monthly Cost |
|---|
| Communication | Google Workspace + Slack Free | $6/user |
|---|---|---|
| Project Mgmt | Notion Free + Linear Free | $0 |
| CRM | HubSpot Free | $0 |
| Payments | Stripe | % of revenue |
| Banking | Mercury | $0 |
| Accounting | QuickBooks Simple Start | $15 |
| Dev Infrastructure | GitHub Free + Vercel Free | $0 |
When to Add Tools
Add a tool when: A specific workflow is taking more than 2 hours/week that automation or a tool could reduce to 15 minutes. Don't add a tool when: You "might need it someday" — trial it then. Consolidate tools when: You have 3 tools doing the same job. Overlap is a budget leak.The Annual Audit
Every year (or when spending exceeds $1,000/month), run a stack audit:
- List every SaaS tool and its monthly cost
- For each: Who uses it? How often? What's the alternative?
- Cancel anything with under 20% of team using it weekly
- Negotiate annual prepay for tools you're certain about (usually 15–20% discount)
The Bottom Line
The right startup SaaS stack costs under $100/month for a 5-person team in year one. As you grow, add intentionally — tool sprawl is a productivity and budget killer.
The best stack is the one your team actually uses every day. Boring, reliable tools that solve real problems beat sophisticated tools that impress at demos but confuse in daily use.