Sales tax software for Prophet 21
Almost every Prophet 21 sale is B2B, so your tax position is a resale certificate per customer per state. Epicor delivers calculation, certificates, and returns through the AvaTax integration. Nothing it publishes registers you, chases an expiring certificate, or counts exempt sales toward a threshold. Commenda does.
Trusted by global businesses
Manage a certificate per customer, per state
A distributor with thousands of trade accounts needs a valid resale certificate for each one in each state it ships into. Commenda requests them in bulk, validates each on upload, and applies them automatically where they are valid.
Chase expiries before an auditor does
Most certificates are one and done. Some states, Florida among them, want a fresh one every year. We track the expiry date on every certificate and go back to the customer for a replacement.
Monitor your global exposure
Several states count exempt resale sales toward the economic nexus threshold. Commenda measures your Prophet 21 transactions against every state's own rule and notifies you at 80% of a threshold.
Coverage comparison
What Prophet 21 handles, and what it hands back
Prophet 21's tax capability is an integration you license, and Epicor is specific about what it covers. The figures below come from Epicor's own pages on Prophet 21 finance and accounting, Tax Connect, the Avalara partnership behind it, global capabilities, and its own post on sales tax mistakes, checked on July 30, 2026.
A valid resale certificate per customer, per state
- Epicor Prophet 21
- Partly. Certificate management comes with the AvaTax integration, not the ERP
- Commenda
- Requested in bulk, validated on upload, applied automatically where valid
Going back to a customer before a certificate expires
- Epicor Prophet 21
- Not documented. Epicor's material describes storing and validating, not chasing
- Commenda
- Expiry tracked per certificate, per state, with the customer prompted for a replacement
Exempt resale sales counted toward a nexus threshold
- Epicor Prophet 21
- Not handled. Nothing Epicor publishes measures a state threshold
- Commenda
- Counted state by state, on each state's own rule for exempt sales
Registering in the states your wholesale reaches
- Epicor Prophet 21
- Not handled. Epicor's tax pages cover calculation, certificates, and returns
- Commenda
- Permits in all 50 states, plus Canada, the EU, and APAC
Sourcing tax on a drop shipment
- Epicor Prophet 21
- Partly. For EU drop shipments Epicor requires you to already be VAT registered there
- Commenda
- Sourced per transaction from ship-from and ship-to, with the origin recorded
Filing your US sales tax returns
- Epicor Prophet 21
- Partly. Tax Connect Returns files as an outsourced service. Otherwise you export and file
- Commenda
- Filed in all 50 states, zero returns and amendments included
Canada, the UK, and the rest
- Epicor Prophet 21
- Partly. Calculation in 200+ countries. Complex and country-specific VAT is excluded
- Commenda
- Filed across 70+ countries from one platform
| Epicor Prophet 21 |  | |
|---|---|---|
| A valid resale certificate per customer, per state | Partly. Certificate management comes with the AvaTax integration, not the ERP | Requested in bulk, validated on upload, applied automatically where valid |
| Going back to a customer before a certificate expires | Not documented. Epicor's material describes storing and validating, not chasing | Expiry tracked per certificate, per state, with the customer prompted for a replacement |
| Exempt resale sales counted toward a nexus threshold | Not handled. Nothing Epicor publishes measures a state threshold | Counted state by state, on each state's own rule for exempt sales |
| Registering in the states your wholesale reaches | Not handled. Epicor's tax pages cover calculation, certificates, and returns | Permits in all 50 states, plus Canada, the EU, and APAC |
| Sourcing tax on a drop shipment | Partly. For EU drop shipments Epicor requires you to already be VAT registered there | Sourced per transaction from ship-from and ship-to, with the origin recorded |
| Filing your US sales tax returns | Partly. Tax Connect Returns files as an outsourced service. Otherwise you export and file | Filed in all 50 states, zero returns and amendments included |
| Canada, the UK, and the rest | Partly. Calculation in 200+ countries. Complex and country-specific VAT is excluded | Filed across 70+ countries from one platform |
Manage your customers and exemptions in one place
Almost every Prophet 21 sale is B2B, which means the exemption depends on paperwork you have to go and get. We run a batch request to your customer list, and each customer uploads through a portal that can carry your branding. Pairing it with a cutover, where invoices after a set date include tax unless a certificate is on file, materially improves collection.
Calculate taxes globally on Prophet 21 using Commenda
Tax resolves per transaction against the ship-to address, down to county, city, and district, with a product tax code on each line. Where a valid certificate covers that customer in that state, the line goes out exempt and the reason is recorded against it. Revenue that arrived already taxed from a webshop or a marketplace stays untouched.
Track your global exposure from Prophet 21
Distributors routinely discover they had nexus for years without a liability, because every sale was a resale. Then one taxable channel opens and the whole back period matters. Commenda measures your Prophet 21 history against economic and physical thresholds in all 50 states and 70+ countries, and a short questionnaire covers branches, warehouses, and travelling sales reps.
Automatically remit transactions around the world
Returns are built straight from your Prophet 21 transactions, so nothing gets exported or re-keyed, including the zero returns that a resale-only state still expects every period. Filings go out across all 50 states, plus Canadian GST, HST and PST, EU VAT with OSS, and GST across APAC. The liability and the filing confirmation post back to your ledger.
Consolidation
Why resale certificates decide your Prophet 21 tax position
A distributor's exposure is decided by two things Prophet 21 does not track: whether you hold a valid certificate for this customer in this state, and whether your resale sales counted toward that state's threshold anyway. Commenda tracks both.
Wholesale can create nexus years before it creates a liability
Every state writes its own rule. Some count all resale sales toward the economic nexus threshold, some count resales only to a particular type of buyer, and some count taxable activity only. A distributor can therefore trade for a decade on resale alone, have nexus in most states, and owe nothing. Then one taxable channel opens and the registration was due years ago. Reading the transaction history finds that, per state, before a state does. Our nexus thresholds guide sets out each state's rule.
Not every state takes another state's certificate
A large buyer will usually hand you one multi-jurisdictional form. Streamlined Sales Tax and Multistate Tax Commission certificates cover many states at once and we accept and apply both. Several states will not accept an out-of-state resale certificate at all, and Texas states plainly that sellers do not have to accept an exemption certificate. We track which states each customer is actually covered in and prompt them for the rest.
Certificates expire, and the seller carries the loss
If you are never audited, nobody ever asks about a certificate. If you are, the auditor asks for all of them, and every sale without one becomes taxable. Most certificates are one and done, but some states require an annual refresh. We validate each certificate at upload on signature, dates, ID format, and state-specific fields, hold the expiry date, and go back to the customer digitally rather than pushing paper through the mail.
Prophet 21 rarely holds the whole order book
A distributor's ERP records the trade side while a webshop, a marketplace, and a punchout catalogue record the rest, and the customer detail you need for tax is not always in the same system as the order. Every source connects to one ledger across 100+ supported integrations, with each transaction carrying its origin and any tax already collected. The result is one exposure figure per state and one return per period.
What it takes
What global indirect tax takes in Prophet 21
Epicor publishes no list price for Prophet 21 or for Tax Connect, so there are no dollar figures here. What Epicor does publish is what each capability depends on, and on the tax side almost all of it is one subscription.
| What a distributor needs | What Prophet 21 requires | Source |
|---|---|---|
| Sales tax on a trade order at all | The AvaTax integration. Epicor lists exactly three things it adds to Prophet 21: sales tax calculation, exemption certificate management, and sales tax returns filing | Prophet 21 finance |
| Not assigning every new customer to a tax schedule by hand | Tax Connect. Epicor states its geo-coding removes the need to assign customers to specific tax schedules, and that Tax Connect applies to every customer | Tax Connect ISV page |
| Certificates stored, tracked, and validated | The same subscription. Epicor's own guidance is that Avalara's CertCapture and Tax Connect automate the collection and management of exemption certificates | Epicor blog, January 2025 |
| Returns filed rather than exported | Tax Connect Returns, which Epicor describes as fully outsourced sales tax compliance management. Without it you export your data for filing | Tax Connect |
| The rate coverage behind it | Over 14,500 US and Canadian jurisdictions, on subscription-based licensing and pricing that Epicor states works for cloud and on-premises deployments | Tax Connect |
| Tax on a drop shipment into the EU | Your own VAT registration in the destination country. Epicor states drop shipments from the US to the EU can only occur in countries where VAT is registered | Global capabilities |
| Rates outside North America | Included once you have Tax Connect, in more than 200 countries. Epicor states its international capabilities are automatically activated | Global capabilities |
| Complex or country-specific VAT treatment | Not covered. Epicor states the solution supports rates in UN-recognised VAT and GST countries but not complex VAT or country-specific VAT scenarios | Global capabilities |
Sales tax on a trade order at all
The AvaTax integration. Epicor lists exactly three things it adds to Prophet 21: sales tax calculation, exemption certificate management, and sales tax returns filing
Prophet 21 financeNot assigning every new customer to a tax schedule by hand
Tax Connect. Epicor states its geo-coding removes the need to assign customers to specific tax schedules, and that Tax Connect applies to every customer
Tax Connect ISV pageCertificates stored, tracked, and validated
The same subscription. Epicor's own guidance is that Avalara's CertCapture and Tax Connect automate the collection and management of exemption certificates
Epicor blog, January 2025Returns filed rather than exported
Tax Connect Returns, which Epicor describes as fully outsourced sales tax compliance management. Without it you export your data for filing
Tax ConnectThe rate coverage behind it
Over 14,500 US and Canadian jurisdictions, on subscription-based licensing and pricing that Epicor states works for cloud and on-premises deployments
Tax ConnectTax on a drop shipment into the EU
Your own VAT registration in the destination country. Epicor states drop shipments from the US to the EU can only occur in countries where VAT is registered
Global capabilitiesRates outside North America
Included once you have Tax Connect, in more than 200 countries. Epicor states its international capabilities are automatically activated
Global capabilitiesComplex or country-specific VAT treatment
Not covered. Epicor states the solution supports rates in UN-recognised VAT and GST countries but not complex VAT or country-specific VAT scenarios
Global capabilities
Figures verified on July 30, 2026.
From the field
Trusted by businesses across the globe
“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.”
VP of Finance, TRX
Compare Commenda sales tax software with competitors
Epicor's Prophet 21 finance page names AvaTax as the tax integration, so a distributor comparing options is comparing Avalara. We compare the alternatives on coverage, ratings, and real pricing, and we say where each one wins.
More sales tax resources
Guides from the Commenda team on resale certificates, permits, and audit lookback.
Frequently asked questions
Generally yes, with limited exceptions. The obligation is per state, and the paperwork sits with you as the seller even though the exemption belongs to your customer. Many larger buyers hand you a single Streamlined Sales Tax or Multistate Tax Commission form that lists several states and their registration number in each, and we accept and apply both alongside single-state forms. For audit strength we still recommend a state-specific certificate wherever the buyer has presence. We track which states each customer's certificates already cover and prompt them through the portal for the ones that are missing.
Yes, and this is the most common surprise in distribution. Having a valid certificate means you do not charge tax on that sale. It does not mean the sale disappears. Several states count exempt sales toward the economic nexus threshold, some count resales only to particular types of buyer, and some count taxable activity only. A distributor can therefore have nexus in most states and no liability anywhere, which is fine until one taxable channel opens and the back period matters. We surface that per state so you know which registrations were already due.
By tracking coverage per customer per state rather than per customer. A handful of states will not accept a certificate issued by another state, which means a buyer who is fully documented in one place can still be undocumented in another. The portal shows you which combinations are covered and which are open, and requests the missing forms directly from the customer. Texas also notes that a seller is not obliged to accept an exemption certificate at all, so where a form is weak we would rather charge the tax than carry the exposure.
We do. Most certificates are one and done, but some states want them refreshed. Florida is the one distributors hit first. We hold the expiry date on every certificate, flag the ones coming due, and email the customer a link to upload a replacement through the same portal they used the first time. That turns an annual paper chase into a list you can see, and it means an auditor asking for a specific year gets a document rather than an explanation.
Only through the add-on. Epicor's Prophet 21 finance page lists three things the AvaTax integration brings: sales tax calculation, exemption certificate management, and sales tax returns filing. On the Tax Connect side Epicor says it generates summary and detailed reports on demand and that you export your data for filing, or use Tax Connect Returns for fully outsourced sales tax compliance management. So filing is available, as an Avalara service on a separate subscription. Commenda files across all 50 states on each state's required frequency, including the zero returns a resale-only state still expects, and files amended returns where a period needs correcting.
From where the goods actually move, which is why drop shipping is genuinely hard for distributors. Three parties and two shipments mean the sale from you to your customer and the shipment from your supplier to the end buyer can point at different states, and the rules for which one governs vary. Each transaction carries its own ship-from and ship-to, so the sourcing decision is made per line rather than per customer. Cross-border is stricter again: Epicor states that drop shipments from the US into the EU can only occur in countries where you are already VAT registered.
With a batch request and a cutover date. We email your customer list, each one uploads through a self-service portal that can carry your branding and your domain, and reminders go out to the ones who have not responded. Announcing that invoices after a set date will include tax unless a certificate is on file materially improves collection, because it turns a favour into a deadline. Only the exempt customers ever need to touch the portal, and you get one dashboard showing who is exempt in which states.
Yes. US sales tax, Canadian GST, HST and PST, and UK VAT are handled from the same platform, with each tax type routed to its own account so your books stay clean. Commenda covers 70+ countries in total, including EU VAT with OSS and IOSS. Where a branch runs on something other than Prophet 21, that system connects separately across 100+ supported integrations, and a mapped monthly CSV covers anything with no connector.
Custom integration support for your business
Every Prophet 21 setup is different, and so is every trade customer list. We map how yours works, including which ship-to records need a certificate and which orders should be calculated, and build the integration to match. No engineering work on your side.
Indirect Tax
Monitor nexus exposure, register, file, and remit sales tax and VAT in one platform. Commenda keeps you compliant across 100+ jurisdictions.
Explore the product
