Assume that you own an early-stage business. You still building your clientele and can survive financially if do not make much of a profit this year (you have other sources of income to cover your personal expenses). However, your revenue must be enough to pay for all of your business expenses, i.e. you must break even.

Question: When preparing your sales forecast, how much of a safety margin (%) would you want to factor into your projections so that you feel confident that your business will survive (and so you can sleep at night)?