API Documentation

This resource is for developers, and enables easy integration into websites ranging from ecommerce/shopping cart systems to subscription/membership based applications. The only requirements are an API token (available in Contraccount settings area) and mandatory passthrough variables. Optional passthrough variables are also available, please view the complete documentation, recommended solutions and installation instuctions below:

API Documentation

Useful Links (United Kingdom)

Here are a list of links that will definately come in handy if you have any queries regarding taxation and returns:

Self Assessment
VAT Returns
Deadlines
Rates and Allowances (Income Tax)
Rates and Allowances (National Insurance)
National Insurance Forms
Online Self Assessment