Your question is somewhat confusing.
First you state a "Bull Call Spread" which would be a debit spread.
Then you have:
break even = put sold - net credit
Examples for Break Even for Credit and Debit Spreads both put and calls is this:
These examples are on RIG Sept. Options. All sell to open are @ the Bid, all buy to open are at the ask.
Prices after the close 08/02/10
Debit Call spread. (Bullish)
sell to open Sep 55 @ 1.99
buy to open Sep 50 @ 4.20 net debit $2.21
Break even = long call strike + net debit. Or 50 + 2.21 = 52.21.
At that point the long 50 calls are 2.21 ITM.
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Credit Put Spread (Bullish)
sell to open Sep 50 @ 3.60
but to open Sep 45 @ 1.87 net credit $1.73
Break even = short put strike - net credit, or 50 - 1.73 = 48.27
At that point the short 50 puts are 1.73 ITM
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Credit Call Spread. (Bearish)
buy to open Sep 57.50 @ 1.34
sell to open Sep 52.50 @ 2.91 net credit $1.57
Break even = short Call strike + net credit, or 52.50 + 1.57 = 54.07
at that point the short 52.50 call is 1.57 ITM
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Debit Put Spread (Bearish)
buy to open Sep 52.50 @ 5.05
Sell to open Sep 47.50 @ 2.44 net debit
Break even = long Put strike - net debit, or 52.50 - 2.44 = 50.06
at that point the long 52.50 put is 2.44 ITM.
The attached screen shots are for the examples above from a options calculator I found on-line.