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Sales tax and VAT software for Unit4

Unit4 generates a VAT return from your transaction register and submits it straight to HMRC. Its own localisation chapter for North America covers 1099 forms and a Canadian report. Commenda registers you, tracks exposure across 50 states and 70+ countries, and files.

Integration connection between platform and Commenda

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Keep HMRC, add the rest of your countries

Unit4 submits your VAT return to HMRC through the API and calls itself HMRC-recognised. Its own North America localisation chapter covers 1099 forms and a Canadian report. Commenda files in all 50 US states.

Monitor your global exposure

Unit4 posts VAT where you told it to. Commenda measures the same transactions against economic and physical thresholds in all 50 states and 70+ countries, and notifies you at 80% of a threshold.

One exposure figure across every entity

Unit4 consolidates a VAT group well. Commenda consolidates every source behind it, across 100+ supported integrations, so a shared finance team sees one exposure figure per jurisdiction.

Coverage comparison

What Unit4 handles, and what it hands back

Unit4's figures come from its own ERP Financial Management product guide, whose last chapter is its localisation capabilities, and from what Unit4 publishes on Making Tax Digital, checked on July 30, 2026.

Unit4 ERPCommenda
Registering to collect taxNot handled. Unit4 assumes a registration already exists wherever you post VATPermits in all 50 states, EU VAT with OSS and IOSS, and GST across APAC and Canada
Submitting your VAT returnPartly. It submits to HMRC through the API. Other authorities are not documentedFiled across 50 states and 70+ countries from one platform
US state and local sales tax ratesNot handled. Its North America localisation covers 1099 forms and a Canadian reportApplied at the delivery address, down to district level, on every transaction
Knowing where you oweNot handled. No nexus or economic threshold monitoring is documentedEconomic and physical thresholds in 50 states and 70+ countries, with alerts before you cross
VAT across several legal entitiesHandled. VAT groups and multiple entities run on configurable profilesOne ledger across every entity and every source, 100+ integrations supported
Exemption certificatesStored as a posting rule. Partial exemption is your recovery rate, not a customer documentCollected, validated, stored, and applied automatically where valid
Keeping the rules currentYours. On its US 1099 connector, Unit4 puts regulatory updates on the customerMaintained by Commenda across every jurisdiction you are registered in

Calculate taxes globally on Unit4 using Commenda

Unit4 gives each product a default VAT treatment and each transaction a tax code you maintain. Commenda takes the same transaction and applies the US rate at the delivery address, split into state, county, city and district. The breakdown stays on the line, so the return and the invoice never disagree about what was charged.

global indirect tax calculation software product shot commenda

Track your global exposure from Unit4

In Unit4 a VAT profile is something you configure for the entities you already report for, so it only accounts for tax where you told it to. Commenda measures the same transactions against economic and physical thresholds in all 50 states, every EU member state, and 70+ countries. A short questionnaire covers staff and stock, which never appear on an invoice.

global indirect tax exposure tracking software product shot commenda

Automatically remit transactions around the world

Unit4 documents a direct HMRC submission and tracks the messages exchanged with it. Its published localisation for North America is 1099 reporting and a Canadian report, and neither is sales tax. Commenda builds the return straight from your Unit4 data and files across all 50 states, plus EU VAT with OSS and GST in APAC and Canada, with amendments where a period needs correcting.

global indirect tax remittance software product shot commenda

Manage your customers and exemptions in one place

Unit4 handles partial and full VAT exemption as a posting rule on your own recoverable tax. A US resale certificate is a different object: a document a customer sends you, valid in some states and not others. Commenda collects them through a branded portal, validates each one on upload, applies it automatically where it is valid, and chases expiries.

global indirect tax exemption certificate software product shot commenda

Consolidation

Why Unit4 does not know your US exposure

Unit4 was built for organisations whose finance team is small relative to their complexity. That works while the tax regime is one you registered for. It stops working the moment an obligation starts without anyone applying for it.

  • Unit4 files the return it was built to file

    Unit4 describes a three-step VAT process: generate the return proposal from the digital transaction register, validate it, then submit it directly to HMRC using APIs. It also tracks every message exchanged with HMRC. That is a real filing capability and it is worth having. It is also one country, and the United States has 45 states levying sales tax plus thousands of local jurisdictions underneath them.

  • Its North America chapter covers 1099 forms only

    The last chapter of Unit4's ERP Financial Management product guide is titled "Localisation capabilities", and its only section is North America. What it covers is 1099 reporting through a third-party application and a Canada Revenue Agency payments report. Sales tax, state jurisdictions and nexus appear nowhere in the document. On the 1099 connector Unit4 states plainly that it does not resell the product and that the customer is responsible for regulatory updates.

  • A US obligation starts the moment you cross a threshold

    A VAT registration is something you apply for. A US sales tax obligation switches on when your sales into a state cross that state's threshold, and the state does not tell you. For an organisation with a small finance team shared across entities, that is the exposure nobody is watching, because no field in Unit4 changes when it happens.

  • One ledger behind every source

    Unit4 is usually the system of record with billing, a storefront, or a grants and fees system feeding it, and tax already collected upstream is not yours to file again. Every source connects to one ledger across 100+ supported integrations. Each transaction carries its origin and any tax already collected, so you get one exposure figure per jurisdiction and one return per period.

What it takes

What global indirect tax takes in Unit4

There are no dollar figures here, because Unit4 publishes none and a reseller's estimate is not Unit4's number. What Unit4 does publish is what each capability depends on, and on the one US regulatory feature it ships, it says in its own words who owns keeping it current.

What you needWhat Unit4 requiresSource
A VAT return submitted to the tax authorityUnit4 ERP or Financials by Coda for the UK. It generates a proposal from the digital transaction register, validates it, and submits to HMRC using APIsUnit4 on Making Tax Digital
VAT across several legal entitiesConfigurable profiles. Unit4 states the solution supports VAT reporting for multiple legal entities including VAT groups, through modular and configurable profilesUnit4 on Making Tax Digital
Reverse charge and partial recoveryIncluded. Unit4 lists full and partial exemption, partial deductible VAT, partial recoverable VAT and VAT reverse charge as flexible tax handlingERP product guide
US state and local sales tax ratesNot offered. Unit4's localisation chapter for North America covers 1099 reporting and a Canadian payments report, and never mentions sales taxERP product guide
Its one US regulatory featureA third-party application. Unit4 interfaces with 1099-ETC and 1099-PRO by sending output files in batch rather than in real timeERP product guide
Keeping that US feature currentYou. Unit4 states it does not resell 1099-ETC, that customers buy it from the vendor, and that the customer is responsible for regulatory updatesERP product guide
Knowing which US states you owe inNot documented in any Unit4 module. Nexus and economic threshold monitoring appear nowhere in the product guideERP product guide
A priceA quote. Unit4 publishes no list pricing for its ERP, so there are no figures in this table and no estimate is invented for oneUnit4 ERP

Figures verified on July 30, 2026.

From the field

Trusted by businesses across the globe

TRX
TRX
“The platform works exactly the way I need it to. I have one team member who manages all of our exemption certificates, and that functionality has been particularly efficient for us. It allows him to handle everything seamlessly, making the handoff significantly easier.”
Matt Preston, CPA

VP of Finance, TRX

Read the full story

Compare Commenda sales tax software with competitors

A European organisation adding US sales tax usually shortlists a US-first vendor and keeps its VAT setup where it is. We compare the alternatives on coverage, ratings, and real pricing, and we say where each one wins.

Avalara Alternatives and Competitors (2026)

More sales tax resources

Guides from the Commenda team on US nexus, EU VAT, and outsourcing the filing work.

See all articles

Frequently asked questions

What finance teams running Unit4 ERP ask before they move their indirect tax to Commenda.
Read our FAQ library

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.

Custom integration support for your business

Every Unit4 instance is configured differently, and the entity and profile structure exists for good reasons. We map how yours works, including your VAT group and which revenue should be calculated, and build the integration to match.

Indirect Tax

Monitor nexus exposure, register, file, and remit sales tax and VAT in one platform. Commenda keeps you compliant across 100+ jurisdictions.

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