Oman's e-invoicing dates are now set in law: 1 April and 1 October 2027. Read our guide. Read the guide
E-invoicing and VAT platform for Oman
Invoice And Tax issues PINT-OM e-invoices, credit and debit notes and self-billing documents, exchanges them through our Peppol Access Point, and keeps payables, settlements and VAT return figures in one Arabic and English workspace — connected to the systems you already run.
Trust
Each statement links to its evidence and to the issuer, so you can verify it independently.
Invoice And Tax is listed by the Oman Tax Authority's Fawtara portal as an Accredited Service Provider.
View evidence: Accredited Service Provider Verify with issuer(opens external site)
Peppol-certified Access Point Service Provider.
View evidence: AP Certified Verify with issuer(opens external site)
Invoice And Tax is developed and operated by Elsayed Hamdi for Advanced Technology SPC, whose Information Security Management System is certified to ISO/IEC 27001:2022 for the scope stated in certificate 305026071423IS.
One platform
Compliance is not a one-off project. It is the invoice you issue on Sunday, the credit note you raise on Tuesday and the VAT figures you review at quarter-end — all in one connected record.
Create tax invoices in PINT-OM (UBL 2.1), validate them against versioned rules before anything is sent, and keep every issued version frozen.
E-invoicing: Sales invoicesAdjust with controlled reason codes; every note links back to the original invoice.
Credit and debit notes: Credit and debit notesRecord supplier invoices next to your sales and see what you owe with payables ageing.
Purchases and payables: Purchases and inbound documentsRecord a payment once and allocate it across invoices in an append-only ledger that refuses over-allocation.
Settlements: SettlementsIssue self-billing invoices and self-billing credit notes for your suppliers, in the same workflow.
Self-billing: Self-billingFinance and VAT reports, exportable to CSV and Excel, with an append-only audit trail behind them.
Reporting: Reports and auditREST API, connectors, file transports and Excel or CSV import.
Integrations: IntegrationsCalculate return boxes from the tax ledger, run completeness checks and approve with maker/checker before you file.
VAT compliance: VAT preparation and reviewOptional and off by default: ask about your own invoices and reports in plain language, with sources shown.
The assistant: Read-only assistantHow it works
One workflow, the same rules for every source, and a status you can trace at every step.
01
Bring documents in through the API, a connector, Excel or CSV import, or manual entry — all feeding one document composer.
02
Versioned business rules and PINT-OM conformance checks run before anything is sent. The same input always gives the same result.
03
Tax invoices, credit and debit notes and self-billing documents are issued, and each issued version is frozen.
04
Documents travel through our Peppol Access Point under Oman's five-corner model, and each status comes back to you exactly as received.
05
Allocate payments, review ageing and prepare VAT return figures with maker/checker approval.
Oman readiness
Decision 189/2026 sets two mandatory dates. Here is where things stand today.
Published in Official Gazette No. 1660, amending the VAT Executive Regulation to require electronic tax invoices.
Now
Businesses may adopt e-invoicing voluntarily, including a pilot group of large taxpayers from late August.
Source: Forvis Mazars(opens external site) (as reported)
Next
Taxable persons whose annual supplies exceed OMR 5 million must issue electronic tax invoices.
Taxable persons with annual supplies of OMR 5 million or less follow from this date.
General information, not legal or tax advice. Confirm your obligations and dates with the Oman Tax Authority. Checked against the gazette text on 5 October 2026.
Read-only assistant
An optional, read-only assistant that answers questions about your own invoices, settlements and reports in plain language — every answer shows its sources and scope. It cannot create, change or export data. Enabled per organisation by an administrator.
Question: Why is our output VAT for Q3 higher than for Q2?
Answer: Output VAT for July–September is OMR 4,812.350, up OMR 610.200 on April–June. Most of the increase comes from 38 tax invoices issued to two customers in August; two credit notes reduced the quarter by OMR 96.500.
Sources
Inside the platform
A look at the main views. These are schematic illustrations of the workspace, not live screens.
Documents
Tax invoices, credit and debit notes and supplier documents in one list, filtered by status — validated, issued or needing attention.
VAT review
Return boxes calculated from the tax ledger, checked for completeness and approved through maker/checker.
Settlements
Record a payment once, allocate it across invoices and correct with reversing entries.
Audit trail
Create, approve, issue and adjust events are written to an append-only audit trail.
Who it is for
High invoice volumes from POS and ERP systems, validated by the same rules whether they arrive through the API or an import.
Clear tax invoices and credit notes in Arabic and English, with VAT figures ready for review each quarter.
Supplier invoices, self-billing and payment allocation alongside sales, so payables and receivables stay in one record.
Several client organisations from one login, with maker/checker review of each client's VAT figures.
Branches, roles and data kept separate, with one audit trail across the organisation.
Add Oman e-invoicing to your product through a versioned REST API with an OpenAPI 3.1 specification.
Security and compliance
Access is role-based, sensitive fields are encrypted at rest, each organisation's data is isolated, and every significant action is written to an append-only audit trail.
Invoice And Tax is developed and operated by Elsayed Hamdi for Advanced Technology SPC, whose Information Security Management System is certified to ISO/IEC 27001:2022 for the scope stated in certificate 305026071423IS.
Outcomes
The day-to-day results the platform is built to deliver.
Sales, purchases, adjustments and settlements sit together, each with a status you can check.
Return boxes come from the tax ledger built from the documents you issued and recorded.
Credit notes, debit notes and reversing entries keep the original intact and the trail complete.
Each failed rule says what is wrong and where, so documents are fixed before they leave.
Roles, branches and maker/checker approval match how your team divides the work.
Each person works in their own language, on the same records.
Resources
E-invoicing
Decision 189/2026 has the Oman Tax Authority announce the companies licensed to provide e-invoicing services and places security and continuity duties on you. This guide turns tha…
Integration
There is no single right way to connect your systems to e-invoicing. This guide compares the three main routes, a REST API, file transfer through a connector, and spreadsheet impo…
Integration
Structured e-invoices expose every gap in the data behind them. Before you connect an ERP, review the party, item, tax and reference data it holds. This article sets out what to c…
FAQ
Under Decision 189/2026 (Official Gazette No. 1660, 9 August 2026), e-invoicing becomes mandatory on 1 April 2027 for taxable persons whose annual supplies exceed OMR 5 million, and on 1 October 2027 for all others. August to October 2026 is a voluntary pilot period. Read our Oman e-invoicing guide for the details and official sources.
Invoice And Tax is listed by the Oman Tax Authority's Fawtara portal as an Accredited Service Provider. It is also a Peppol-certified Access Point Service Provider. The evidence for both, with links to verify them, is on our accreditations and trust page.
An Arabic and English platform for issuing and managing e-invoices in Oman: tax invoices, credit and debit notes, self-billing, supplier documents, payment settlements, reporting and VAT return preparation, with an append-only audit trail.
No. Invoice And Tax works alongside it. Connect through the REST API or a connector, or import from Excel and CSV. See integrations.
Documents are generated in PINT-OM — the Oman specification of Peppol International — using UBL 2.1.
No. It helps you prepare and review your VAT return figures with maker/checker approval; you file through the Tax Authority's portal. See VAT compliance.
Pricing depends on your organisation's size, document volume and integration needs. Onboarding and integration services are quoted per project. See pricing or request a demo.
