A cash flow forecast - to see how big a loan or overdraft is needed,  when it is needed, whether it can b repaid or not and the period of time the finance is needed for.
a trading and profit and loss acount to measure the profitability of the business, 
A balance sheet which will show the financial position of the business at a given date - and also the value of its creditors(and get  a look at its risk and gearing ratio)