Managing small business finances requires strict attention to detail. You must keep tax receipts for six years, but digital copies are completely acceptable by the CRA. Never rely solely on bank statements for expense proof, and always keep a dedicated business bank account. You must register for GST and Manitoba PST once you hit $30,000 in taxable revenue. While doing your own books is possible early on, hiring a professional bookkeeper like Harmony Ledger, prevents costly compliance mistakes as you grow.