How should I organize my business finances from day one?

Open a separate business bank account

This is the single most important step. It keeps your personal and business money separate, makes taxes simpler, and shows professionalism to customers and lenders. You don't need fancy banking—basic business checking works fine.

Choose a simple accounting method

For a new small business, start with cash-basis accounting: record income when you receive it, expenses when you pay them. You can upgrade to accrual accounting later if needed. Use spreadsheet software or free accounting apps—you don't need expensive systems yet.

Keep receipts and records

Keep every receipt, invoice, and payment record for at least three years. Take photos of receipts immediately. This matters for taxes, disputes, and understanding where money actually goes. Don't rely on memory.