Prepare a cash flow forecast from these figures You expect to serve 150 customers per month from April to August, paying an average of £12 each. In September, you expect demand to rise to 180 customers. You estimate that you will spend £2,000 per months on shampoo and other expenses. Rent is £1,500 per month. Getting the shop ready to open will cost £20,000 in April. You and Mark are putting in £10,000 each and you are borrowing £20,000.