SUMPRODUCT or CUMIPMT

BHomestar

Board Regular
Joined
Nov 17, 2003
Messages
88
Hi All!

I am trying to get column J to calculate total accrued interest for the amount of periods in cell E3. My problem is that the current sumproduct formulas dont account for the declining balances in column G. I couldnt get cumipmt to work either because I couldnt factor in the amortizion. These balances decline based upon the prepayment speed assumption in cell E4. Ultimately I'm trying to be able to enter a # of monthly periods in cell E3 and get a returned total value of accrued interest in cell J19.

Any time spent is greatly appreciated!!!!
Pool Pricer Master Collateral.xls
BCDEFGHIJ
3PERIOD1
4PREPAYSPEED23.33%
5ORIGINALPAR309,710,005
6AMORTIZEDPAR303,688,984
7
8TrancheRatingOrig,SubordinationCurr.SubordinationParAmount($)WALCoupon(%)BondInterest
9
10ClassAAAA7.95%8.11%$279,067,0393.001.36%$316,276
11ClassM-1AA+6.25%6.37%$5,265,5265.001.59%$6,977
12ClassM-2AA4.75%4.84%$4,645,7645.001.69%$6,543
13ClassM-3AA-3.75%3.82%$3,096,8505.001.79%$4,619
14ClassM-4A+3.00%3.06%$2,322,3925.002.09%$4,045
15ClassM-5A2.50%2.55%$1,548,9145.002.44%$3,149
16ClassM-6A-1.50%1.53%$3,096,8505.002.69%$6,942
17ClassM-7BBB+1.00%1.02%$1,548,9145.002.99%$3,859
18ClassM-8BBB0.50%0.51%$1,547,9355.003.19%$4,115
19SoldBondsTotal$302,140,184$356,526
Execution
 

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