Financial appraisal is an objective evaluation of the profitability and financial strength of a business unit used for capital budgeting and long-term investment decisions. It is measured using both non-discounting cash flow methods like payback period and rate of return, as well as discounting cash flow methods like net present value, internal rate of return, and annual equivalent method. The internal rate of return calculates the discount rate that makes the net present value of all cash flows equal to zero, and is important for planning future growth. Financial appraisal helps make judicial decisions about how much and when to invest using metrics like cost-benefit analysis.