UK Tax Compliance

Ayiza includes built-in support for UK tax compliance, covering VAT returns filed through Making Tax Digital (MTD) and Corporation Tax (CT600) submissions to HMRC.

What is covered

Area	What Ayiza does
VAT Returns	Prepare, review, and submit VAT returns directly to HMRC via the Making Tax Digital API.
VAT Obligations	View your filing deadlines and their current status (open, fulfilled).
VAT Liabilities & Payments	Track what you owe HMRC and what has been paid.
Corporation Tax	Prepare CT600 filings, generate iXBRL accounts, and submit to HMRC Government Gateway.
Tax Register	Automatically capture every tax-relevant line from your accounting documents in one place.
HMRC Connection	Authorise Ayiza to communicate with HMRC on behalf of each company code.

The Tax Register

Whenever you post an accounting document that includes a tax code, Ayiza automatically creates a Tax Register line. Each line records:

• The accounting document number and line
• The tax code, tax rate, and tax type (output VAT, input VAT, etc.)
• Tax amounts in the transaction currency and company code currency
• The posting date, financial period, and financial year
• The origin and destination country (relevant for EC acquisitions and supplies)

The Tax Register is the source of truth for your VAT return. When you prepare a return, you assign Tax Register lines to a declaration period so that the correct amounts flow into the nine VAT boxes.

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You can view the Tax Register at any time under Tax & Compliance > Tax Register Lines to check that all posted transactions have been captured correctly.

Before you start

To use the tax compliance features, make sure the following are in place:

1. VAT registration -- Your company code must be marked as VAT-registered in the Finance Company Code settings, with a valid VAT registration number.
2. HMRC connection -- You need to authorise Ayiza to talk to HMRC for each company code. See VAT Returns for details.
3. Tax codes -- Indirect tax codes (VAT codes) must be set up with the correct rates and types. See Essential Setup.
4. Financial calendar -- A financial calendar must be assigned to the company code so that Tax Register lines are allocated to the correct period and year.

Navigation

All tax compliance features are grouped under Tax & Compliance in the sidebar:

• VAT Returns -- Create and submit VAT returns
• VAT Obligations -- View filing deadlines from HMRC
• VAT Liabilities -- See outstanding VAT amounts
• VAT Payments -- Track payments made to HMRC
• Corporation Tax Filing -- Prepare and submit CT600 returns
• HMRC Company Code Connection -- Manage the HMRC authorisation for each company code