Distributing excess "pennies" to last account

[imported_unknown]

I am allocating money to various funds (up to 20 to choose from - and any number can be chosen as long as the total % equals 100) by keying in %-ages per fund and applying those %-ages to a TOTAL Contribution amount entered per person. However, sometimes the sum of the allocated amounts does not equal the TOTAL due to rounding. It may be several cents off. Applying rounding fns doesn't help. I want to "dump" the difference into the last account or one of the accounts that was "off". How can I do this w/o VBA? Do you know of any function that accomodate this? (P.S. The %-ages & # of accounts a person can choose can change monthly.) Thanks!! (I can provide a specific example if I didn't explain this well enough)

 

[Andrew Poulsom]

What I normally do in this situation is calculate the cumulative apportionment and subtract the previous cumulative apportionment.

See the example.

Roundings.xls
	A	B	C	D	E
1	Amount	12,345.67
2
3	Fund	AdjustedAmount	%	BasicAmount
4	Fund1	3,049.38	24.7%	3,049.38
5	Fund2	2,012.34	16.3%	2,012.34
6	Fund3	2,246.92	18.2%	2,246.91
7	Fund4	1,456.79	11.8%	1,456.79
8	Fund5	1,555.55	12.6%	1,555.55
9	Fund6	2,024.69	16.4%	2,024.69
10	Total	12,345.67	100.0%	12,345.66
Sheet1