Updating your books regularly is essential for keeping your business finances accurate and stress free. A weekly update helps track cash flow closely, manage expenses, and spot issues early, making it ideal for busy businesses with frequent transactions. Monthly updates suit small to medium businesses that want a clear picture of income, expenses, and profit while preparing for taxes or reports. Quarterly updates may work for very small businesses with fewer transactions, but they risk missing details or creating last minute pressure. The best choice depends on the size and activity of your business, but more frequent updates generally lead to better financial control and smarter decisions.