How do founders use AI for bookkeeping, invoicing, runway and burn analysis?

Founders now hand AI the boring parts of finance: reading supplier invoices from email, categorizing bank transactions, drafting collection emails for unpaid invoices, and reconciling accounts against QuickBooks, Xero or Zoho Books. They also paste in a bank statement or P&L export and ask the AI plain questions like "what's my monthly burn and how many months of runway do I have if revenue stays flat?" The rule that works: give the AI real source data and a narrow job, then review its output, it's a very fast junior bookkeeper, not a replacement for accurate books or a good accountant.