CiviCRM Community Forums (archive)

I hope this is possible...

I'm working on my tax field extension and in our earlier rendition we created a custom field that held the rate of tax that we wanted to apply. Then we referenced the value of the field whenever we needed to apply tax to a membership or an event registration.

What I'd like to do with my extension is create a custom field for tax when the module is activated and then provide a configuration page where the administrator can apply a number for the rate of sales tax that is going to be calculated.

I see that hooks are available to populate custom fields with data (http://book.civicrm.org/developer/current/techniques/hooks/) but what about a hook to create the field?

If this is going to be particularly difficult or for some reason can't be done, I'm open to looking at other methods to store the tax rate. In fact it may be a better idea to create a db table so we can have a whole series of taxes that can be applied per jurisdiction. My plan is to create a simpleTax module for applying a tax or taxes and then expanding on it so that it can provide solutions for a number of scenarios.

Anyway, I appreciate any tips or feedback. I'm using the great civix tool and can't say enough good things about it 

Thanks,
Andrew

Thanks lobo,

I'll give that a try.

Andrew