100% Oman Tax Authority (OTA) Compliant • Zero Penalties Guarantee

100% Oman Tax
Compliance On Autopilot
Zero Fines. Zero Hassle.

Connect your ERP or billing system in under 24 hours. Automated Oman Tax Authority clearance, 5% VAT calculations, and 10-year statutory audit protection for enterprise businesses in Oman.

✓ Live in 24 Hours • Save 80% vs In-House Build • 99.999% SLA Uptime

Calculate Business ROI

Live Pipeline Monitor

ID: OM-INV-0042

1

Invoice Created

Success

2

XML Compiled

Success

3

Validated (UBL 2.1)

Success

4

Submitted to Gov

Success

5

Government Accepted

Success

Built for CFOs, Finance Directors & Business Owners

Why leading enterprises across Oman choose Fatwra to automate tax compliance and eliminate regulatory risk.

Zero Tax Penalty Guarantee

Automated 3-layer validation inspects every UBL 2.1 XML invoice before submission, guaranteeing 0% rejection rate and total protection from Oman Tax Authority fines.

Go-Live in Under 24 Hours

Pre-built turnkey connectors for SAP, Oracle, Odoo, QuickBooks, and ERPNext mean zero long software projects. Your finance team goes live without disrupting daily billing.

Save 80% vs In-House Build

Building in-house costs OMR 25,000+ in custom mTLS infrastructure, crypto certificate maintenance, and dedicated developers. Fatwra delivers enterprise compliance for a fraction of the cost.

10-Year Statutory Audit Shield

Every tax transaction is cryptographically sealed and archived in immutable WORM storage for 10 years, ensuring instant statutory audit readiness whenever tax inspectors call.

How It Works for Your Business in 3 Simple Steps

No technical complexity. No disruption to your sales workflow.

STEP 01

Connect Your ERP / Billing

Plug in your existing ERP (SAP, Oracle, Odoo, QuickBooks, POS) using our 1-click connectors or seamless REST API keys.

STEP 02

Automated OTA Clearance

Every invoice is automatically signed with ECDSA keys, formatted into UBL 2.1 XML, and cleared with Oman Tax Authority in under 100ms.

STEP 03

Executive Peace of Mind

Track real-time tax liabilities, VAT returns, and statutory audit logs on your clean executive dashboard with zero manual effort.

GCC Compliance Pluggable Engine

Fatwra isolates GCC country-specific tax policies, schemes, and compliance APIs into modular pluggable compliance layers.

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ERP / POS Software

Sales Input

E-Invoicing Gateway

Authentication / REST

Compliance Engine

XML / Signatures / QR

Government API

Clearance Check

Accepted & Secured

10-Yr WORM Retention

Oman compliance

Fully Operational

Saudi Arabia (ZATCA)

Coming Soon

United Arab Emirates (FTA)

Coming Soon

Qatar (Dhareeba)

Coming Soon

Oman Tax Compliance

Oman compliance guidelines mandate specific UBL 2.1 XML schema standard mappings, digital document signatures, and TLV-encoded QR codes. Standard B2B sales invoices require dynamic validation and Clearance workflows prior to delivery, while B2C transactions require Reporting within 24 hours.

UBL 2.1 XML Compliant
Oman Standard VAT (5%)
B2B Gateway Clearance
Digital Signatures Integration

Why Choose Fatwra

The enterprise platform of choice for secure tax data routing, branch operations, and transaction scale.

99.99% Core Uptime

A cloud-native infrastructure featuring active redundant nodes, ensuring high availability logs even during government portal outages.

Government Compliant

Pre-validated templates matching all UBL 2.1 schema guidelines and ECDSA signature requirements for Oman and Saudi ZATCA standards.

Enterprise Security

Bank-grade AES-256 databases encryption, secure OAuth 2.0 gateway APIs, TLS 1.3 encryption, and detailed system logs.

Lightning Fast API

Average document clearance handshakes process in under 142ms, avoiding sales bottlenecks at regional POS terminals.

SaaS & Developer Workbench Console

Configure templates, test sandbox APIs, monitor active dashboard analytics, and view clearance logs.

Create Oman Compliant Invoice

Invoice Class & Type

Invoice ID Series

Seller Information

Company Legal Name

Oman VAT Registration No

Commercial Registration (CR)

Address & Place (Muscat)

Buyer Information

Customer Name

Oman VAT Registration No (Optional for B2C)

Commercial Registration (CR)

Address & City

Invoice Line Items

Transfer to Compliance Simulator

APEX TRADING GROUP LLC

B2B Standard Tax Invoice

INV-2026-0042

Date: 2026-07-22

Seller

Apex Trading Group LLC

Muttrah Business District, Muscat

VAT: OM1100234567

CR: 10984523

Buyer

Al-Sultan Construction LLC

Al Khuwair, Muscat, Oman

VAT: OM1200987654

CR: 23049182

Description	Qty	Price	VAT (5%)	Total

Subtotal: 0.000 OMR

VAT 5%: 0.000 OMR

Total Amount: 0.000 OMR

OTA API Console Terminal

[19:16:54] INFO: Compliance router ready. Click 'Submit' to process invoice calculations.

Clearance Pipeline

1

Schema Compliance Checks

Verifies fields against standard OTA UBL 2.1 syntax regulations.

2

XML Canonicalization

Standardizes layout lines to prepare document hashes digests.

3

ECDSA Signature Injections

Injects local private key stamps directly into XML metadata reference blocks.

4

TLV QR Matrix Render

Assembles base64 tags containing seller information and invoice values.

5

Outbound OTA Relay Transmit

POSTs signed XML token streams over sandbox secure interfaces.

Onboard Merchant Certificate Signing Requests

To sign invoices, your platform must generate a CSR containing your CR, VAT number, and location parameters, and trade it with the OTA endpoint for a signed cryptographic token.

Active Sandbox PCSID

Subject: CN=APEX LLC, C=OM, O=Apex Trading, VAT=OM1100234567

Active

Request Sandbox Certificate

Oman Governorate Code

Private Key Type

Today's sales OMR 14,845.500 +4.2% today

VAT Collected OMR 742.275 Rate: 5.0%

API Gateway Queries 45,182 SLA: 100.0%

Gov status ONLINE Clearance Active

Rejected Invoices 0 0.0% error rate

Pending clearance 0 0 queues items

Worker Uptime 100.00% 4 active clusters

Cert Valid Period 362 days Expires July 2027

Sales & VAT (OMR)

API Response (ms)

Success Rate (%)

Connected Branch Offices

Branch Location	Invoices	Revenue	VAT

Live Activity Feed Stream: Active

OM-INV-3201 Accepted by OTA

Amount: 1,200.000 OMR Just now

OM-INV-3202 Signed Locally

Amount: 345.500 OMR 2 sec ago

OM-INV-3203 Clearance Approved

Amount: 840.000 OMR 5 sec ago

OM-INV-3204 Accepted by OTA

Amount: 14,845.500 OMR 8 sec ago

Compliance Audit Logs History

Timestamp	Invoice UUID	Tenant ID	Type	Amount	OTA Hash Status	SLA Latency
2026-07-23 15:58:12	f3a8b2c4...	tenant_apex_01	Standard B2B	14,845.500 OMR	✓ CLEARED (OTA-HASH: 98fd7a2b)	135ms
2026-07-23 15:52:04	1a8b92c4...	tenant_apex_01	Simplified B2C	45.120 OMR	✓ REPORTED (OTA-HASH: 44aa11bb)	98ms

Enterprise Architecture

A modular, microservices-inspired platform designed for high availability, regulatory compliance, and seamless integration with Oman Tax Authority and future GCC compliance engines.

🌐

SaaS Web Portal

Presentation & Merchant Dashboard Layer

99.99% SLA Responsive

Web interface for merchants, accountants & administration offering real-time invoice monitors, client PDF viewers, and tenant management.

Nuxt 4 Vue 3 Tailwind TypeScript

⚡

API Gateway Layer

High-Speed Request Router & Auth Proxy

54 APIs < 15ms Latency

Routes all requests, enforces OAuth authentication, rate limiting, versioning, API key checks, and webhook events.

Node.js Express OAuth2 Rate Limiter Webhooks

🔑

Auth & Identity

RBAC & Tenant Shield

JWT, SAML SSO, MFA & multi-tenant isolation.

OAuth2 SAML JWT RBAC

💼

CRM & Sales

Customer & Orders

Customer profile cards & sales quotations.

Orders VAT Reg Ledger

📦

Inventory & HS Codes

Customs Classifier

Multi-warehouse stock & Oman Customs HS Codes.

HS Codes Stock Sync

🔌

Developer API

SDKs & Event Hooks

Integrator workbench & sandbox tokens.

cURL PHP Python C#

📄

Core Invoice Compliance Engine

UBL XML Builder & ECDSA Signature Vault

XML 6ms Signature 8ms

Generates compliant UBL 2.1 XML, digitally signs invoices with ECDSA secp256k1 keys, validates tax rules, and renders Base64 TLV QR stamps.

UBL XML PDF Generator Base64 QR Digital Signature 5% VAT Calculator

🏛

Government Integration Layer

Oman Tax Authority Gateway

Avg 1.2s SLA mTLS 1.3

Manages mTLS secure transport, PCSID token lifecycles, real-time B2B clearance, 24-hr B2C reporting, and resilient retry queues.

mTLS 1.3 PCSID Certificate Manager Oman Tax APIs Retry Queue

💾

Database Persistence & Storage Layer

Sharded Relational & Document Storage

Sharded Cluster 10-Yr Data Lock

Immutable event registries, database row hash chains, Redis session caching, and encrypted S3 document archives.

PostgreSQL Redis Cache AWS S3 Meilisearch

☁️

Cloud Infrastructure & CI/CD

High-Availability Containerized Orchestration

Multi-Region Auto-Scale

Containerized microservices orchestrated via Kubernetes with global CDN edge delivery and automated CI/CD pipelines.

Docker Kubernetes Cloudflare CDN GitHub Actions

Enterprise Microservices Architecture

20 Modular Building Blocks.
Infinite Scale.

Deploy individual compliance microservices or orchestrate the full GCC E-Invoicing suite with zero infrastructure friction.

20 Modules

•

120+ Microservice Features

•

35+ REST APIs

•

99.99% Availability SLA

•

10-Yr Statutory Storage Lock

Business Ecosystem Integrations Engine

Connect Your Existing
Business Systems

Integrate your ERP, accounting software, eCommerce platform, CRM, or custom applications with a single API. Eliminate duplicate data entry and keep invoices, customers, products, and payments synchronized automatically.

12+ Enterprise Integrations

REST & Webhooks Event Engine

Real-Time Bi-Directional Sync

99.99% Delivery SLA

8 Languages Native SDKs

Real-Time Automated Data Synchronization Flow

🏢 Merchant ERP SAP / Oracle / Dynamics

➔

⚡ E-Invoice Platform UBL 2.1 & ECDSA Core

➔

🏛 Oman Tax Authority mTLS Clearance & Report

➔

💳 Payment Gateway OmanNet / Cards / Banks

➔

📊 Accounting Ledger Statutory GL Postings

🏢 Enterprise ERP Systems

Core Enterprise

SAP S/4HANA

Enterprise ERP

Customers & Tax Registry
Products & HS Codes
Tax Invoices & UBL XML
Bank Payments & Ledger

● Real-time Sync

Oracle Cloud ERP

Enterprise ERP

General Ledger Accounts
Purchase Orders & Vendors
Clearance Invoices
Automated Disbursements

● Real-time Sync

Dynamics 365

Enterprise ERP

Business Entities & CRs
Sales Orders & Lines
Compliances & Hashes
Customer Receipts

● Real-time Sync

Odoo ERP

Modular ERP

Client Profiles & VAT
Items & Tax Categories
E-Invoices & QR Codes
Journal Postings

● Real-time Sync

ERPNext

Open-Source ERP

Contacts & Addresses
Sales Registers
UBL 2.1 Clearance
Bank Reconciliation

● Real-time Sync

💰 Accounting & Finance

Financial Ledgers

QuickBooks

Accounting

Chart of Accounts
Tax Invoices & Credit Notes
Customer Balances

● Bi-Directional

Zoho Books

Accounting

Customer Directories
Oman VAT Returns
Payment Receipts

● Bi-Directional

Sage Intacct

Accounting

Multi-Currency Ledgers
Statutory Reports
Audit Records

● Bi-Directional

🛒 E-Commerce, CRM & Frameworks

Digital Channels & SDKs

Shopify

E-Commerce

Online Orders Sync
B2C Simplified Invoices
Auto 24-Hr OTA Report

● Auto Webhook

WooCommerce

E-Commerce

Checkout Orders
Oman 5% VAT Rules
Digital E-Receipts

● Auto Webhook

Salesforce

CRM & Deals

Opportunity Deals
Client Tax Directory
B2B Clearance Invoices

● Real-time Sync

Laravel SDK

PHP Framework

Native PHP SDK Package
Eloquent Model Listeners
Webhook Event Triggers

● SDK Integration

⚡ Extended Enterprise Ecosystem (Gateways, Vaults & Identity)

Payment Gateways

• OmanNet Gateway • Thawani Pay (Oman) • Stripe Payments • MyFatoorah GCC

Cloud Storage Vaults

• Amazon S3 WORM Vault • Google Drive Archive • Microsoft OneDrive • Dropbox Enterprise

Identity & SSO

• Microsoft Entra ID • Google Workspace SSO • Okta Identity Cloud • Auth0 Provider

Messaging & Alerts

• WhatsApp Business API • Twilio SMS Router • SendGrid Email Engine • Mailgun Webhooks

Enterprise Delivery Guarantees

Real-Time Synchronization

OAuth2 & SAML 2.0 Auth

REST APIs & OpenAPI 3.0

High-Frequency Webhooks

Scheduled Batch Imports

Bi-Directional State Sync

Resilient Retry Queues

Immutable Audit Registers

Automatic Error Notifications

Need a Custom Integration?

Our REST APIs, SDKs, and Webhooks make it easy to connect any ERP, legacy database, or custom application.

Explore Developer API Sandbox →

Proven Client Success

How enterprises and retail platforms leverage our invoicing speed to streamline tax submissions.

90%

Retail Operations

Reduced invoice generation and clearance lag time across all Muscat POS points from 3s to 150ms.

500h

Manufacturing Hubs

Saved hours of annual manual spreadsheet collation through integrated auto-audited logs and submission histories.

100%

Healthcare Networks

Guaranteed tax compliance across branches, resolving standard warnings prior to dispatch.

Compliance Pricing Configurations

Configure plans aligned with your transaction counts and locations scope across Oman.

Interactive Invoice Volume & SLA Calculator

Estimate your monthly compliance cost, clearance SLA latency, and dedicated throughput capabilities.

Recommended Tier

Professional Tier

Monthly Invoice Volume: 50,000 Invoices / mo

1,000 / mo 100,000 / mo 500,000 / mo 1,000,000+ / mo (Enterprise)

Estimated Investment 120 OMR / mo

Clearance SLA Speed < 95 ms

Dedicated mTLS Pipeline High-Priority Tunnel

Statutory WORM Vault 5 Years Locked

Standard Tier

For growing local merchants.

OMR 45/mo

1 Connected Branch
Up to 1,000 Invoices/mo
Standard 5% VAT engine
UBL XML clearance templates

Start Free Trial

Professional Tier

Ideal for multi-branch organizations.

OMR 120/mo

Up to 5 Branch Locations
Up to 15,000 Invoices/mo
Advanced Zero-Rated Tax schemes
Live REST gateway keys & webhooks
Priority queue SLA support

Launch Sandbox Console

Enterprise Compliance

Uncapped volumes and GCC wide pipelines.

Custom

Unlimited Branches & POS terminals
Uncapped Invoices volumes
Pluggable GCC compliance adapter
Custom API logging retention (10-Yr)
Dedicated account compliance engineers

Contact Sales

Detailed Plan Feature Comparison

Compliance Features	Standard	Professional	Enterprise
Monthly Invoice Count	1,000	15,000	Unlimited
Connected Branches	1	5	Unlimited
Oman Tax Clearance (B2B)
Developer REST API Keys
AI Invoice OCR & Anomaly Scan
Data Retention Audit Ledger	1 Year	3 Years	10 Years (OTA Mandated)
SLA Response Support	Email (24h)	Priority (2h)	Dedicated Technical Account Manager

Frequently Asked Questions

Everything you need to understand about Oman's tax integration guidelines.

How does the Oman Tax Authority (OTA) integration handshake work?

Fatwra securely forwards signed UBL 2.1 XML payloads to the official government clearance APIs. B2B transactions undergo validation check clearance, returning a success hash digest and cryptographic stamp. B2C simplified invoices are submitted directly to the reporting gateway logs within 24 hours.

Do I need to generate my own cryptographic signature certificates?

No. You can compile a CSR directly inside our Sandbox Certificate tab or via API. Fatwra acts as your HSM (Hardware Security Module) manager, exchanging CSR keys for signed PCSID credentials from the OTA.

Can I integrate Fatwra with our existing Odoo, SAP, or QuickBooks ERPs?

Yes. We provide pre-packaged SDK code libraries in Python, JavaScript/Node, PHP/Laravel, and .NET. You map your internal payment/receipt structures to our POST endpoints and we automate the signing process.

Does the platform support multiple branch networks and inventory locks?

Yes. The Professional and Enterprise tiers support multi-location branch setups. Each branch maintains distinct location identifiers, local bank routes, tax CR values, manager registers, and isolated transaction ranges.

HTTP Request	POST /api/v1/invoices
Response Code	200 OK
Government Status	Accepted / Cleared
UBL Signed	Yes (ECDSA-SHA256)
QR Generation	Generated (Base64 TLV)

100% Oman TaxCompliance On AutopilotZero Fines. Zero Hassle.

Trusted by leading enterprise organizations in Oman

Built for CFOs, Finance Directors & Business Owners

Zero Tax Penalty Guarantee

Go-Live in Under 24 Hours

Save 80% vs In-House Build

10-Year Statutory Audit Shield

How It Works for Your Business in 3 Simple Steps

Connect Your ERP / Billing

Automated OTA Clearance

Executive Peace of Mind

GCC Compliance Pluggable Engine

ERP / POS Software

E-Invoicing Gateway

Compliance Engine

Government API

Accepted & Secured

Oman compliance

Saudi Arabia (ZATCA)

United Arab Emirates (FTA)

Qatar (Dhareeba)

Oman Tax Compliance

Why Choose Fatwra

99.99% Core Uptime

Government Compliant

Enterprise Security

Lightning Fast API

SaaS & Developer Workbench Console

Create Oman Compliant Invoice

Seller Information

Buyer Information

Invoice Line Items

APEX TRADING GROUP LLC

Seller

Buyer

Crypto Certificate Active

OTA API Console Terminal

Clearance Pipeline

Schema Compliance Checks

XML Canonicalization

ECDSA Signature Injections

TLV QR Matrix Render

Outbound OTA Relay Transmit

Onboard Merchant Certificate Signing Requests

Active Sandbox PCSID

Request Sandbox Certificate

API Reference Documentation

Live API Details Summary

Webhook Log Ticker

SDK & Code Generator

Sales & VAT (OMR)

API Response (ms)

Success Rate (%)

Connected Branch Offices

Compliance Audit Logs History

Enterprise Architecture

SaaS Web Portal

API Gateway Layer

Auth & Identity

CRM & Sales

Inventory & HS Codes

Developer API

Core Invoice Compliance Engine

Government Integration Layer

Database Persistence & Storage Layer

Cloud Infrastructure & CI/CD

SaaS Web Portal

20 Modular Building Blocks.Infinite Scale.

Invoice Engine

Connect Your ExistingBusiness Systems

🏢 Enterprise ERP Systems

SAP S/4HANA

Oracle Cloud ERP

Dynamics 365

Odoo ERP

ERPNext

💰 Accounting & Finance

QuickBooks

Zoho Books

Sage Intacct

100% Oman Tax
Compliance On Autopilot
Zero Fines. Zero Hassle.

20 Modular Building Blocks.
Infinite Scale.

Connect Your Existing
Business Systems