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I have been involved in a project and now it is coming to an end. The good news is the company will start to commercialize the software which is specific software to ISPs. As a programmer / developer of the project, I intend to still support the project, attend to new custommer customizations, basically the software will still alive and be sold in the market.

How much should I charge to stay ON the project? Should I charge per hour? per month? or even by percent over each customer?

What is the default for this kind of situation? or How do most programmers/developers deal with that?

Thanks in advance, It is a very important question to me.

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closed as off-topic by Ixrec, MichaelT, durron597, Robert Harvey, Philipp May 28 '15 at 4:11

This question appears to be off-topic. The users who voted to close gave this specific reason:

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Are you working as a freelance developer? Was the software developed on a contract basis? – Bernard Apr 4 '11 at 20:59
@Bernard is a kind of freelance agreement, no contract yet. But I think will need a contract soon, since starts to sell in the market. I'm just looking for a reference in how to charge this. A Fix value + percent over the incoming ? Is that right? – B4NZ41 Apr 4 '11 at 21:02
up vote 1 down vote accepted
  1. find out how valuable are your services to the company selling the software
  2. charge them that amount
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Point 1 is often hidden / obfuscated. So if your skills are on coding and not on investigative work, what would you do? – Pacerier Jul 10 '15 at 8:44
@Pacerier: ask. – Steven A. Lowe Jul 15 '15 at 23:09

I would charge the same amount for a period of time and then raise the fee if the project is successful and your contribution remains integral.

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