Tax and fee exemption

How do we take a government, nonprofit or business customer's tax exemption certificates, check them, and apply the exemption to billing with the record kept for audit?

Treat the certificate as a document with a jurisdiction, a scope and an expiry. Callvu identifies the account and prefills the lines, the service addresses and the taxes and fees currently billed, classifies the exemption claimed (a sales and use tax exemption, a federal excise tax exemption, a state or local communications tax exemption, a universal service or 911 fee exemption where the law allows), lists the certificate each jurisdiction and tax requires, collects the certificates through a link, reads and checks each (the form, the jurisdiction, the exemption number, the signer, the dates, the entity name against the account), routes a certificate that does not match or a claim the law does not allow to the tax desk in the Decision Desk, applies the exemption to the billing system by tax and by line from the allowed date, and keeps the certificate with its expiry for the audit and the renewal.

In scopeComplex: multi-party handoffsCallvu moves: chase and verify, decide, write back

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Last updated November 7, 2026.

The problem today

The school district's exemption was applied to every tax on the bill, including the ones no certificate can exempt, and the audit found it four years later.

Today, without Callvu

Exempt customers send certificates: a state sales tax form, a federal excise exemption statement, a letter on letterhead. An agent applies 'tax exempt' to the account, which removes taxes and fees the certificate never covered (the 911 fee, the universal service charge, a local utility tax) and leaves the carrier liable at audit. Or the certificate is never applied, and the customer disputes every bill.

Each tax and fee on a telecom bill has its own exemption rules: what entities qualify, which form proves it, which jurisdiction issued it, whether the fee can be exempted at all (many 911 and universal service charges cannot), and when the exemption starts. The certificate expires or the entity changes. The billing system must apply the exemption by tax and by line, and the audit will ask for the certificate behind each one.

An exemption applied by tax, from a checked certificate, survives the audit.

How it runs

From the requestto the system of record.

A customer claims a tax or fee exemption, at account opening or on an existing account. Callvu opens the exemption case on the account.

Customer's tax or finance contact: Uploads the certificates through a link and confirms the scope.
Tax desk: Decides mismatches and disallowed claims in the Decision Desk.
Callvu: Prefills, classifies, lists the certificates, collects, checks, routes, applies and keeps.

Prefill and classify
The account, the lines and their service addresses (which set the jurisdictions), the entity type on file and the taxes and fees currently billed by line are prefilled from the billing system; the exemption claimed is classified by tax (sales and use, federal excise, state and local communications taxes, utility user taxes) and by jurisdiction, and the taxes and fees the law does not allow to be exempted are marked as not exemptable with the reason.
Chase and verify the certificates
The certificate each tax and jurisdiction requires is listed (the state's resale or exemption certificate, the multi-state form where accepted, the federal excise exemption statement, a government purchase order or letter where the state accepts it) and requested through a link; each is read on arrival and checked: the form is the right one, the jurisdiction matches the service address, the exemption number is valid in format and against the state's lookup where available, the entity name matches the account, the signer and the dates are present, and the scope covers the services billed.
Decide
A matching certificate for an exemptable tax is applied by rule; a mismatch (a different entity name, an expired certificate, a jurisdiction that does not match), a claim on a non-exemptable fee, a partial exemption or a retroactive request goes to the tax desk in the Decision Desk with the certificate and only the allowed outcomes (apply, apply from a later date, apply in part, request a corrected certificate, or deny with the reason).
Write back
The exemption is written to the billing system by tax and by line from the allowed effective date, the certificate is stored against the account with its jurisdiction, scope and expiry, the customer is told which taxes and fees are exempt and which are not and why, and the renewal is scheduled before the expiry.

Where it ends: The exemption was applied only to the taxes and lines the checked certificates cover, from the right date, with the certificates kept for the audit and the renewal scheduled. The Decision Trace shows the classification, each certificate's checks and any decision; the Audit Trace shows the requests, the uploads and the billing write.

Runtime enforcement

What is enforcedwhile the work runs.

The regulations preloaded in Callvu Studio and the bank's own policies, applied as steps that run, not lines in a binder. A step that breaks a rule does not run, so a completed run was compliant.

Regulations

State tax exemption rules: Each state's sales and use tax and communications tax laws define the exempt entities (governments, qualifying nonprofits, resellers, certain manufacturers), the certificate the seller must obtain and keep to be relieved of liability (the state's own form or an accepted multi-state certificate), the good faith acceptance standard, the validity period and renewal, and the records retention for audit; many state and local 911 fees and universal service surcharges are not exemptable, and the carrier remains liable for tax it fails to collect without a valid certificate.
Federal communications excise tax exemptions (IRC 4253) and the federal universal service contribution rules: The federal excise tax on local telephone service has statutory exemptions (government, nonprofit hospitals and educational organizations, and others) claimed by an exemption statement the carrier keeps; the federal universal service charge is a carrier cost recovery that is generally not exemptable by customer status.
FCC truth-in-billing rules (47 CFR 64.2401): Taxes and fees must be described on the bill with the charges the carrier is required to collect separated from those it chooses to, so the customer can see which were exempted and which were not.

Company policies

An exemption is applied by tax and by line from a checked certificate, never as an account-level flag.
Non-exemptable fees are explained to the customer, not silently left on the bill.
Mismatches and disallowed claims are the tax desk's decision.
The billing system holds the exemption and the certificate with its expiry; the renewal is scheduled.

Controls

Prefill of lines, jurisdictions and billed taxes.
Exemption classification by tax with non-exemptable marking.
Certificate list and link collection.
Certificate reading and checks with lookups.
Decision Desk for exceptions.
Billing write by tax and line, certificate storage and renewal scheduling.

Clocks and deadlines

Effective date: From the certificate's receipt or the date the state allows; retroactive requests go to the tax desk.
Certificate expiry: Tracked from the certificate, with the renewal chased before it.
Retention: The state's audit period.

Documents and checks

The classification by tax and jurisdiction
Each certificate as received and checked
Any tax desk decision
The billing write and the customer's explanation

In the Decision Trace

The classification and the non-exemptable fees.
Each certificate's checks.
Any decision and the person.

In the Audit Trace

The requests and uploads with time.
The write by tax and line.
The renewal schedule.

The handoff

Between the front doorand the back office.

The front door

Account opening or an existing account, with a link to the customer's finance contact.

The back office

The tax desk decides only exceptions; billing applies by tax and line; the audit has the certificates.

The Decision Desk

A mismatched or expired certificate, a claim on a non-exemptable fee, a partial exemption or a retroactive request goes to the tax desk in the Decision Desk with the certificate and only apply, apply from a later date, apply in part, request a correction, or deny with the reason.

Proof

In scope.Proof at scale, not one process at a time.

The kind of process Callvu runs in production for customers in this industry. Ask for a reference on this exact process. The results below are the industry's published proof; each claim code links to its record on agents.callvu.com.

More than 1,000 processes are live across Callvu customers.

Across Callvu customers

AT&T runs close to 100 processes on Callvu, used by 55,000 agents.

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Questions

What buyers ask next,answered plainly.

Which taxes can be exempted?

The ones the law allows for the entity type and jurisdiction, such as sales and use tax and the federal excise tax with the right certificate; many 911 fees and universal service charges cannot be, and the customer is told why.

What is checked on a certificate?

The form, the jurisdiction against the service address, the exemption number, the entity name against the account, the signer, the dates and the scope.

What happens when a certificate expires?

The renewal is chased before the expiry; an exemption on an expired certificate goes to the tax desk.

Related processes

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