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Present value: Difference between revisions
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*For one thing, because you have to wait a year for that money. If you wanted it now, you'd have to borrow it, and you would have to pay interest on it. Call this the “funding cost”. Deduct that funding cost from the value of the £10. | *For one thing, because you have to wait a year for that money. If you wanted it now, you'd have to borrow it, and you would have to pay interest on it. Call this the “funding cost”. Deduct that funding cost from the value of the £10. | ||
*For another, until I actually pony up the cash, you are my creditor, and if I go bust, you may not ever get that £100. Call this the “[[credit risk]]”. | *For another, until I actually pony up the cash, you are my creditor, and if I go bust, you may not ever get that £100. Call this the “[[credit risk]]”. | ||
*For a third, inflation. | *For a third, inflation. what £10 buys today is likely to be more than what £10 buys in a year. | ||
Think of it another way: imagine you loaned me £10, for a year, without interest. You would never do that, right? This is why a [[zero-coupon bond]] issues at a discount. it doesn’t pay interest, so instead you buy at a discounted price which implies the interest rate you would be prepared to pay. | Think of it another way: imagine you loaned me £10, for a year, without interest. You would never do that, right? This is why a [[zero-coupon bond]] issues at a discount. it doesn’t pay interest, so instead you buy at a discounted price which implies the interest rate you would be prepared to pay. | ||
Careful book-keepers therefore ''[[discount]]'' the value of [[future cashflow]]s back, by reference to an implied interest rate, to find their [[present value]]. | Careful book-keepers therefore ''[[discount]]'' the value of [[future cashflow]]s back, by reference to an implied interest rate, to find their [[present value]]. | ||
{{seealso}} | {{seealso}} | ||
*[http://www.quantopia.net/the-discount-curve-zcbs-and-the-time-value-of-money/ Good arrticle on the time value of money] | |||
*[[Zero-coupon bond]] | *[[Zero-coupon bond]] | ||
*[[Time value]] | |||