Excel 'If Then' or 'When' statement

OK, I'm doing some accounting in an excel spreadsheet where I list out all of my transactions. I then want to sum up the transactions depending on how they are labeled without sorting them or anything like that. Basically I'm wanting to come up with a formula to look at an entire column and determine if a number should be counted or not. Here's an example:

Col. A       Col. B
deposit     50.00
credit       100.00
credit       120.00
misc.        50.00
deposit     200.00
credit       25.00

Then in the totals section I'm wanting to see this:

deposits    250.00
credits      245.00
misc.        50.00

So for the deposits total I'm wanting to add up all of column b if column a says deposit, and the same for credits and misc. Is this possible? I've thought about making hidden columns where the totals show up if column a says a specific thing and then adding up that hidden column but then every time I come up with a new type for column a i'm going to have to create a new hidden column rather than just copy my formula over again.
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You can use the SUMIF( ) function to sum on a criterion:

Say the transaction type is in A1:A100 and the amount in B1:B100
-In D1:D3, write the categories exactly the way they are entered in A1:A100 (no trailing 's'):
-In E1, enter the formula: =SUMIF($A$1:$A$100,E1,$B$1:$B$100)
- copy E1 (menu Edit > Copy), select E2:E3, and paste (menu Edit > Paste)


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inetomahaAuthor Commented:
That worked great!!! Thanks Sebastien!

Thanks for the points and grade, Marshall.  Glad i could help.
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