Sales tax and VAT software for Unit4

In the UK, yes. Unit4 describes a three-step process for Making Tax Digital: it generates a VAT return proposal from the digital transaction register, validates the return, then submits it directly to HMRC using APIs. It also tracks every message exchanged with HMRC and reconciles the submitted return against source data. Unit4 states this covers both Unit4 ERP and Financials by Coda, and describes itself as fully HMRC-recognized. Outside the UK, Unit4 documents flexible VAT handling and reporting rather than a named submission channel. Commenda files across all 50 US states and 70+ countries from one platform, with amendments where a period needs correcting.

Not as Unit4 documents it. Its ERP Financial Management product guide has one localisation chapter, and it is North America. The two things in it are 1099 reporting for accounts payable, handled through a third-party application that consumes batch output files from Unit4, and a payments report for the Canada Revenue Agency. Sales tax, state and local jurisdictions, use tax and exemption certificates appear nowhere in the document. Commenda applies state, county, city and district rates at the delivery address on every transaction, registers you in the states you owe, and files on each state's required frequency.

No. Nexus monitoring appears in no Unit4 module. Unit4's VAT design starts from the entities and profiles you configure, which means it accounts for tax where you told it to and is silent about everywhere else. Commenda measures your Unit4 transactions against economic and physical thresholds in all 50 states, every EU member state, and 70+ countries, and notifies you at 80% of a registration threshold, before you cross. A short questionnaire covers physical presence too, because a warehouse, a contractor or a remote employee never appears on an invoice.

Yes, and this is one of the places Unit4 is genuinely strong. Unit4 states its solution supports VAT reporting requirements for multiple legal entities, including VAT groups, through modular and configurable profiles, and its product guide lists intercompany posting, company-based reporting hierarchies and elimination postings. Commenda sits alongside that rather than replacing it. It reads each entity's transactions, consolidates them into one ledger tagged by ship-to jurisdiction, and measures exposure once per jurisdiction rather than once per entity, so a shared finance team is not reconciling several answers to the same question.

Yes, because Commenda does not touch it. Unit4 lists full and partial exemption, partial deductible VAT, partial recoverable VAT and VAT reverse charge as part of its tax handling, and those are recovery rules on your own input tax. They stay in Unit4 and stay correct. What Commenda adds is the other side of the ledger: the tax you charge customers, in jurisdictions where a rate has to be looked up rather than configured, and where the obligation to charge it started without anyone telling you.

Three things, and none of them look like VAT. There is no single national rate, so tax is built from state, county, city and district and decided by the address the customer is at. There is no single return, so each state files on its own frequency. And there is no registration threshold you apply for, because the obligation starts the moment your sales into a state cross that state's threshold. Commenda reads your existing Unit4 history first, so registration follows the states you have already crossed rather than a guess, then calculates, files and tracks remittance per jurisdiction.

Yes, and for most Unit4 shops that is the point. Unit4 is usually the system of record with billing, a storefront, or a fees and grants system feeding into it, and tax already collected upstream is not yours to file again. Commenda connects each source directly and consolidates everything into one ledger tagged by ship-to jurisdiction, so exposure is measured once against one number with no double-counting and no missed channel. Commenda supports 100+ integrations, plus a REST API and a mapped monthly file where no connector exists.

Yes, both, on one platform. Commenda registers for EU VAT and files under One Stop Shop for cross-border B2C sales, plus IOSS for imported goods, alongside intra-community reporting. On the US side it registers in all 50 states, applies state, county, city and district rates, and files on each state's frequency. GST across APAC and Canada runs through the same ledger. For a European organisation that already reports VAT properly, the value is that the American half stops being a separate project.