Setting Up Your Financial Stack
The exact tools, accounts, and processes you need from day one.
Setting Up Your Financial Stack
Day one after funding, you need three things: a bank account that works for startups, accounting that won't drive you insane, and a system for tracking where every dollar goes. The financial infrastructure you build now will either enable or constrain your ability to scale.
Startup Banking: Your First Critical Choice
Traditional banks treat startups like they're still operating out of a garage. Slow transfers, terrible APIs, no integration with modern tools, and customer service that can't spell "MVP." Your time is worth more than $50/hour — spending it on hold with a bank is business suicide.
Two platforms dominate for seed-stage companies:
- Mercury — Built specifically for startups. Clean interface, instant transfers, integrations with accounting tools, no fees. Best if you want simplicity and don't care about corporate cards.
- Brex — Stronger on expense management. Corporate cards with per-employee spend controls, cash management features, and higher transaction limits. Better if you're managing larger expense volumes across a team.
Recommendation: Start with Mercury for simplicity. Move to Brex if spend management becomes a bottleneck as you scale.
Accounting: DIY is a Trap
You'll be tempted to do your own bookkeeping. Don't. You're not a bookkeeper — you're a founder. Every hour you spend on QuickBooks is an hour you're not on customer calls or building product.
Your options:
- QuickBooks Online + part-time bookkeeper ($500-800/month) — Good if you have complex accounting needs (multiple currencies, complex deductions). Slower to set up.
- Pilot, Brex Treasury, or Ramp Accounting ($400-600/month) — Automated bookkeeping built for startups. Faster onboarding, better integrations, less manual work.
Set this up before your first investor check clears. You'll need clean books for fundraising.
Building Your Chart of Accounts
Don't overthink this. A bloated chart of accounts creates confusion and wasted time. Keep it simple:
- Revenue — Separate by stream (MRR, ARR, one-time, consulting)
- COGS — Hosting, API costs, any direct costs of delivery
- Payroll — Salaries, taxes, benefits (this is usually your biggest line item)
- Software — SaaS subscriptions, development tools, testing platforms
- Professional Services — Legal, accounting, consulting, contractors
- Marketing & Sales — Ads, events, content, tools
- Operations — Everything else (office, travel, meals, insurance)
Your bookkeeper will map transactions to these categories. Review your P&L monthly to spot trends.
The Monthly Financial Cadence
Set up this rhythm from month one:
- Weekly (5 min) — Spot-check your bank balance for anomalies. Look for unauthorized charges or unexpected wire transfers.
- Monthly (2-3 hours) — Close books, review P&L against budget, update your 18-month cash flow forecast, meet with your bookkeeper if anything looks off.
- Quarterly (1-2 days) — Deep financial analysis. Calculate burn rate trend, analyze runway, budget vs. actual spend, prepare for board meetings.
Non-negotiable: Your CFO (or founder if you don't have one yet) should be able to tell you your runway within 15 minutes at any time.
Avoiding the Visibility Trap
Startup failures from cash depletion rarely happen overnight. They happen slowly — a few months of higher-than-expected burn, a delayed customer check, a larger hiring bill — until suddenly you're three months from insolvency.
The difference between founders who run out of money and those who don't isn't always a revenue problem. It's a visibility problem. They didn't see it coming until it was too late to fix.
Action items: Set up your bank account this week. Hire a bookkeeper by the end of next week. Build a simple 18-month cash flow forecast in a spreadsheet. Review it every Sunday night.
"The startups that run out of money almost never have a revenue problem. They have a visibility problem — they didn't see it coming until it was too late."
Action Items
- Open a Mercury or Brex account today
- Hire a startup bookkeeper this week
- Build an 18-month cash flow model in a spreadsheet
- Set up your chart of accounts before your first transaction
- Schedule your first monthly financial review