CiviCRM Community Forums (archive)

Hello All.
I have a few months of experience with civiCRM and several years with Drupal. I have seen several postings about incorporating a tax field into their civiCRM installations however I haven't seen any solutions so, I'm going to work on one and publish whatever I manage to produce in this thread. First I could do with some direction from those in the know. With regard to approach... Would the recommended course of action be to create a Drupal Module or create a custom template?

I've started moving in the direction of a module but it just occurred to me that I can probably create a custom field and then add it to the template.

I'm not sure who else can benefit from this but it seems that those from Canada and perhaps the UK & Australia could use it.

Thanks,
Andrew  

EDIT: So a little further on the subject, I've kind of mapped out what I think will work well but I'm open to comments and suggestions.

1) I've made a copy of MembershipBlock.tpl and added it to my custom template folder which coincides with the path that I assigned in Administer -> Configure -> Global Settings -> Directories  I edited the template between lines 79 & 90 where the template creates a table column of "Membership Costs" I added some text indicating that there would be tax applied.

<td style="width: auto;">
                <span class="bold">{$row.name} &nbsp;
                {if ($membershipBlock.display_min_fee AND $context EQ "makeContribution") AND $row.minimum_fee GT 0 }
                    {if $is_separate_payment OR ! $form.amount.label}
                        - {$row.minimum_fee|crmMoney}
                    {else}
                        {ts 1=$row.minimum_fee|crmMoney}(contribute at least %1 to be eligible for this membership){/ts}
                    {/if}
                {/if}
               
                </span> Insert Text For Tax Statement Here!<br />
                {$row.description} &nbsp;                     
           </td>

All this does of course is update the presentation adding " Insert Text For Tax Statement Here!" after the amount shown for each membership category.

2) Now that I've added a statement to each membership item, I need to do something to effect the invoice. In this case I want to add a field that is a percentage of the value of the membership and then add the two values together so that we have a grand total.  I suppose that will have to happen on the confirmation page before it gets sent for processing. I think it may have to be done with a module invoking one of civiCRM's hooks but I'm not sure which one will actually do the job. The candidates I'm looking at are:
hook_civicrm_buildForm()
hook_civicrm_buildAmount()

Tips and suggestions are welcome!

i think you might need to do both. Create a view only field(s) that the postProcess hook populates. use the buildAmount hook to increase the amount based on the "tax code" pertinent to that location.

THis is a bit similar to the discount hook (check the module multicurrency: http://svn.civicrm.org/tools/trunk/drupal/modules/multicurrency/)

your discount is basically an addition to the amount. You might want to store the percentage etc in a separate table (option group?)

ping us on IRC and we can help sort out details. definitely a needed feature

lobo

I know this is an old thread but it has some good keywords and has been looked at nearly 500 times so... I thought I would put a link to our recipe for adding a tax field to civiCRM. I worked on this with a colleague and it does work but it isn't a simple plug-n-play solution and it's a bit of a pain to maintain when updating civiCRM.

Link to Drupal civiCRM Group posting: http://groups.drupal.org/node/182444

If anyone wants to help roll up these changes into a module, please let me know. I think it would be quite handy to be able to plug this into civi as a module.