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Tax technology in real time.

7 integrated modules — from the buyer’s tax DNA to the final calculation at checkout. Every operation tax-perfect, in real time.

Real time
Engine latency
27
States covered
Dual
IBS/CBS regime
5.570
Municipalities

Every layer of the tax problem, solved

Mastery isn’t a monolithic product. It’s 7 specialized modules that work together — each one solves a specific layer of Brazilian tax complexity.

01 — Tax DNA

Every buyer validated before the first calculation.

The system queries and enriches the buyer’s federal data in real time: CNPJ, primary CNAE, registration status, tax regime, state, Simples Nacional. All validated against government databases before any tax operation.

Sintegra · Receita Federal · SEFAZ · Cadastro Nacional
CNPJ Input
Validation
Tax Profile
real-time
02 — NCM Monitoring

Tax DNA mapped, monitored and continuously updated.

Dynamic tax classification with AI: NCM, CEST, ST, CFOP, incentives, injunctions. The system monitors changes in municipal, state and federal legislation daily and updates production rules automatically.

NCM · CEST · CFOP · ST · IOB · SEFAZ · Diário Oficial
Legislation
AI Analysis
Rules
continuous
03 — Calculation Engine

Automatic calculation of all tax obligations.

An engine that dynamically applies NCM, CFOP, ST, ICMS, IPI, PIS/COFINS, CSLL and other taxes to each item, order line and transaction. The result: a fully automatic and auditable operation.

ICMS · IPI · PIS · COFINS · CSLL · ST · Benefits
Order
Calculation
Taxes
Result
ms
04 — Tax Reform

Dual IBS/CBS regime ready from day one.

The engine already runs in dual regime: you see ICMS/IPI (current regime) AND IBS/CBS (reform in effect) simultaneously. Any change in legislation is applied instantly. No emergency implementations, no surprises at go-live.

IBS · CBS · Glosa · Estoque · Crédito · Alíquota
IBS/CBS
Legislation
Dual
live
05 — Tax Benefits

Automatic rules and benefits by CNAE and location.

Suspension, deferral, injunctions, presumed credit. The system identifies eligibility automatically: by CNAE, by municipality, by regime, by operation type. Traceable documentation for auditing.

Lei Estadual · LC 123 · SUDENE · SUDAM · Liminar
CNAE/Location
Identification
Applied
automatic
06 — Control Panel

Real-time tax operations dashboard.

Engine performance metrics, full audit of every calculation, alerts for triggered rules, history of legislative changes with impact. An intelligence hub for compliance and business decisions.

Auditing · Performance · Alerts · History
Operations
Dashboard
Intelligence
visual
07 — Native REST API

Documented endpoints, webhooks and SDKs for major languages.

Integration in days, not months. POST order, GET result with all taxes itemized, PUT settings per account, webhooks for events. Python, Node.js, Go, Java, Ruby supported natively.

REST · Webhooks · SDKs · Rate Limit · Retry
POST Order
Processing
GET Result
JSON
architecture

Built for scale and reliability

Cloud-native infrastructure, geographic redundancy, asynchronous processing. Fully auditable.

Distributed Processing

Calculation engines replicated across multiple regions. No single point of failure.

Multi-Layer Cache

Distributed Redis, rule cache, validation cache. Minimal latency guaranteed.

Auditing and Compliance

Immutable log of every operation. Full traceability for the Federal Revenue Service.

Ready to automate your tax operation?

Get in touch and talk to one of the partners. We’ll reply within 24 business hours.

(11) 92039-3952
meajuda@masteryb2b.tech
Rua Luiz Seráphico Júnior, 511 / 613, Jardim Caravelas - São Paulo / SP