Monitor your sales/revenue, expenses, and profit on a monthly basis.
Your revenue: How much money is coming into your business?
Your expenses: Divide your expenses into fixed costs (those that don’t change from month to month, such as rent, salaries and insurance payments) and flexible expenses (costs that change, such as commissions).
Your profit: The difference between your revenue and expenses.
Your tracking: Sometimes the hardest part of a budget is tracking revenue and expenses against your goals on a daily, weekly and/or monthly basis.
Download a sample budget spreadsheet from practicalbusinessskills.com.