How to Set Up Sub-Accounts for Taxes and Reserves

Create dedicated business sub-accounts to automate tax withholding and build operating reserves with proper allocation percentages.

  1. Calculate your target allocations. Determine tax withholding at 25-35% of gross revenue depending on your tax bracket and entity type. Calculate reserve target as 3-6 months of fixed expenses plus variable costs. S-Corps typically need 25-30% for taxes; sole proprietorships need 30-35%.
  2. Open dedicated sub-accounts. Open separate business savings accounts for taxes and reserves at your existing business bank. Most business banks offer multiple sub-accounts under one master account with no additional fees. Keep these accounts separate from your operating checking account.
  3. Set up automatic transfers. Schedule weekly or bi-weekly transfers from your main operating account to sub-accounts. Transfer your calculated tax percentage immediately when revenue hits your account. Transfer to reserves until you hit your 3-6 month target, then reduce to maintenance amounts.
  4. Track and adjust quarterly. Review actual tax liability against withheld amounts each quarter. Adjust transfer percentages based on profit margins and seasonal revenue patterns. If reserves exceed 6 months of expenses, consider moving excess to higher-yield accounts or investments.