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GAAP vs. IFRS. GAAP (US Generally Accepted Accounting Principles) is the accounting standard used in the US, while IFRS (International Financial Reporting Standards) is the accounting standard used in over 110 countries around the world.
The internal rate of return (IRR) or economic rate of return (ERR) is a rate of return used in capital budgeting to measure and compare the profitability of investments.t is also called the discounted cash flow rate of return (DCFROR). In the context of savings and loans, the IRR is also called the effective interest rate. The term internal refers to the fact that its calculation does not incorporate environmental factors (e.g., the interest rate or inflation).