# SUMPRODUCT or CUMIPMT

#### BHomestar

##### Board Regular
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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