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WP-Invoice: Change WordPress into an Invoice Management System

Twin Cities Tech has released a pretty powerful plugin for WordPress that transforms it form a blogging engine to an invoice management system ala Blinksale. The plugin is called WP-Invoice and is currently available for free.

WP-Invoice lets WordPress blog owners send itemized invoices to their clients. Ideal for web developers, SEO consultants, general contractors, or anyone with a WordPress blog and clients to bill. The plugin ties into WP’s user management database to keep track of your clients and their information.

Once an invoice is created from the WP admin section, an email with a brief description and a unique link is sent to your client. Clients follow the link to your blog’s special invoice page, view their invoice, and pay their bill using their credit card.

Credit card payments may be accepted via, MerchantPlus’ NaviGate, or PayPal. For recurring billing we have integrated’s ARB API that will allow you to setup payment schedules along with invoices.

I have to admit, I am pretty impressed by this whole thing, and I look forward to seeing reviews on it. I currently have little need for something like this, but I could see how useful it could be for most freelancers. WordPress does nearly everything else these days, why not manage invoices as well?

Is this something you would use, and if so, does it replace another piece of software or service you are already using? I wonder if this makes certain web services a little nervous?

Categories: WordPress Plugins

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  1. Leon Poole says: 2/5/2009

    Thanks for posting about this – I’d never heard of an invoicing plugin for wordpress but I guess it was bound to happen sooner or later, and this one sounds great.

    I think you’re right in wondering if other web services in the business of invoicing – my view is that they will need to step up and offer better services/products OR they’ll need to develop plugins enabling their product to be integrated with WP also ;)


  2. Luis ) says: 2/5/2009

    I tried it but I get a nasty sql error, I contacted the developer, hopefully I’ll hear from them soon. Thanks for the post, this plugin, once is working, looks great.


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  5. Trivikram says: 5/12/2011

    I am Using this WP-Invoice Plugin. It was working great. I am searching for a good theme to suit this output. Is there any one available.


  6. Izzy says: 3/23/2013

    You might try WP-Client which works for us with client portals, file sharing & estimates/invoicing…