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TotallySum Connect · OTA-accredited

Oman's e-invoicing mandate, handled.

Connect SAP, Oracle or any ERP once. TotallySum Connect validates every invoice, delivers it over Peppol and reports it to the Oman Tax Authority, then sends the status back to your system.

Book a readiness call View the API
Why TotallySum Connect

Fawtara compliance, without changing how you bill.

You don't need a new finance system to meet the mandate. Connect plugs into the tools you already use, turns each invoice into a compliant e-invoice, and handles delivery and reporting to the Oman Tax Authority in the background.

Your ERP, accounting or POS TotallySum Connect Buyer & OTA

Keep your current systems

SAP, Oracle, QuickBooks, Zoho, Tally or your own software stays in place. Connect via a ready connector, API or file upload.

Real-time validation

Every invoice is checked against PINT OM rules the moment it's created, so mistakes are fixed on your side, not rejected by the OTA.

Accredited, certified, hosted in Oman

OTA-accredited service provider, ISO/IEC 27001:2022 certified, with your invoices stored in Oman for 10 years.

A local team that knows you

Support from our team in Muscat, in Arabic and English, with a ticketing system so every request is tracked from setup through go-live and beyond.

FawtaraOTA e-invoicing timeline

Two dates every VAT-registered business in Oman should know.

—
days to Phase 1
—
days to Phase 2
PilotLive
August 2026

Around 100 large taxpayers, selected and notified directly by the OTA.

Phase 2Upcoming
1 October 2027

All other VAT-registered businesses, including SMEs.

GovernmentExpected
2028

E-invoicing to government entities (B2G). Date still to be confirmed.

Based on Oman Tax Authority Decision No. 189/2026. Dates and thresholds can change, so always confirm your phase with the OTA. Invoices must be sent in the PINT OM format through an accredited service provider; a PDF on its own will not count.
Check your phase on the OTA portal Or ask our team

What the mandate asks of you, and how we cover it.

The requirement
TotallySum Connect
Structured e-invoices in PINT OM, not PDFs
Generated from your ERP data in the required format, with no rekeying.
Exchange through an accredited service provider
Delivered by TotallyTech LLC, an OTA-accredited service provider and OpenPeppol member. Verify on the Fawtara portal
Tax data reported to the OTA
Reported automatically on every invoice, with the confirmation stored alongside it.
Records you can produce on request
Every invoice is archived in Oman and searchable for ten years.
Inside TotallySum Connect

Every e-invoice, in and out, on one screen.

TT
TotallyTech LLC
VATIN OM1100••••••
OTA connection live

Good morning

Last 30 days · 5 Oct – 4 Nov 2026

Sales e-invoices

View all →
1,284 issued
Reported 1,036Rejected 12

Purchase e-invoices

View all →
312 received
Accepted 280To review 24
Upload a batchExcel, CSV or XML
ReconcileE-invoices vs your ledger
Archive searchFind any e-invoice fast

Live activity

  • INV-1016 reported to OTA
  • BILL-5521 received from Bahla Builders
  • INV-1015 rejected: buyer VATIN invalid
  • Batch of 48 invoices imported from SAP
  • CRN-0207 delivered over Peppol

Sales e-invoices

Filters · 1 · Oct 5 – Nov 4, 2026
Total
1,284
Reported
1,036
Delivered
140
Validated
96
Rejected
12
NumberStatusDateTypeBuyerVATINTotal (OMR)VAT (OMR)
INV-1012Reported03 Nov 2026Tax invoiceWadi Logistics LLCOM11002314571,260.00060.000
INV-1013Reported03 Nov 2026Tax invoiceQurum Medical CentreOM11003188204,830.750230.036
CRN-0207Delivered03 Nov 2026Credit noteSeeb ElectronicsOM1100402291−210.000−10.000
INV-1014Validated04 Nov 2026Tax invoiceNizwa HospitalityOM11001177642,105.250100.250
INV-1015Rejected04 Nov 2026Tax invoiceSur Marine SuppliesOM1100559012640.50030.500
INV-1016Reported04 Nov 2026Tax invoiceDhofar Agro SAOCOM110066018312,480.000594.286

Purchase e-invoices

Filters · 1 · Oct 5 – Nov 4, 2026
Total
312
Accepted
280
To review
24
Rejected
8
NumberStatusDateTypeSellerVATINTotal (OMR)VAT (OMR)
BILL-5521Received04 Nov 2026Tax invoiceBahla BuildersOM11007723103,150.000150.000
BILL-5522Accepted03 Nov 2026Tax invoiceSohar Steel WorksOM11002833918,820.000420.000
BILL-5523Accepted03 Nov 2026Tax invoiceMuttrah Print HouseOM1100190045525.00025.000
BILL-5524Rejected02 Nov 2026Tax invoiceIbri Fresh ProduceOM11003381721,071.00051.000
BILL-5525Accepted02 Nov 2026Tax invoiceSablah Office SuppliesOM1100402918262.50012.500

Sales e-invoices by month

ReportedDeliveredValidatedRejected

By document type · Nov

Tax invoices1,142
Credit notes96
Debit notes34

VAT on e-invoices · Nov

41,280.450 OMR

Sample data for illustration.

Integrations

Plugs into the system you already run.

Use ready connectors for the major ERPs and accounting tools, or the REST API and SDKs for anything else. Every route ends in the same validated, reported e-invoice.

Built for the finance team and the IT team.

One dashboard for every e-invoice

See what went out, what came in and what needs attention. Errors show the exact field to fix.

Delivered
1,284
Received
312
Needs attention
2
Sample figures

ISO/IEC 27001 certified

Run by TotallyTech's certified team in Muscat, which has been building regulated systems since 2010.

ERP connectors

SAP, Oracle, QuickBooks, Zoho, Tally and HospoGate out of the box, plus SDKs, a REST API, and SFTP or bulk upload for anything else.

Checks before submission

Problems are caught while they're still yours to fix, not after a rejection.

Send and receive

Supplier e-invoices arrive in the same hub, ready to post to your ERP.

Developer platform

Built for the engineers who wire it up.

REST API, SDKs, interactive Swagger docs, and a staging environment that behaves like production.

ILLUSTRATIVE 
var connect = new ConnectClient(
    apiKey: config["TS_API_KEY"],
    environment: ConnectEnvironment.Staging);

var result = await connect.Invoices.SubmitAsync(invoice);
Console.WriteLine(result.Status); // "reported"
curl -X POST $TS_API_URL/invoices \
  -H "Authorization: Bearer $TS_API_KEY" \
  -H "Content-Type: application/json" \
  -d @invoice.json
201{ "status": "reported", "delivered": true }
OpenAPI · Swaggerv1
  • Submit sales e-invoices and credit notes
  • Track status: validated, delivered, reported
  • Receive purchase e-invoices from suppliers
  • Status updates pushed back to your system

Full Swagger reference and keys are shared with registered customers.

Request API access

From staging to production, with no surprises · Same API · different key

STAGING

Build & test

Send test invoices and get realistic validation errors and responses. No real filings.

SIGN-OFF

Review with our team

We check your mapping and test results together before anything goes live.

PRODUCTION

Go live

Swap the key, and real invoices flow to the network and the tax authority.

Consultancy

More than a connector. A team in Muscat.

Software alone doesn't make you compliant. Our consultants work with your finance and IT teams from the first assessment through to go-live.

01

Readiness assessment

Which phase applies to you, what your ERP produces today, and what's missing.

02

Data mapping

We map your ERP fields to the e-invoice format, including VAT, buyer and item details.

03

Integration build

Our engineers configure the SAP, Oracle or custom connector alongside your IT team.

04

Training & go-live

Training for finance users and close support through your first weeks live.

Certifications

Compliance you can audit, not just trust.

Your invoices carry tax data, so the company handling them should be held to independent standards. TotallyTech is accredited by the Oman Tax Authority, certified to three ISO standards and registered with Oman's SME and supplier programmes.

  • OTA-accredited service provider · Fawtara
    Accredited by the Oman Tax Authority since 12 October 2026, with TotallySum as the accredited solution. Verify the listing
  • ISO/IEC 27001:2022 · Information security
    How we protect your invoice data, access and systems.
  • ISO 9001:2015 · Quality management
    Consistent, documented processes from onboarding to support.
  • ISO 22301:2019 · Business continuity
    Planned and tested so e-invoicing keeps running when something goes wrong.
  • OpenPeppol member
    Full member of the international network Oman's e-invoicing runs on. See the members list
Certified by ABS GlobalValid
Certified by ABS Global, ISO/IEC 27001:2022ISO/IEC 27001:2022
Certified by ABS Global, ISO 9001:2015ISO 9001:2015
Certified by ABS Global, ISO 22301:2019ISO 22301:2019
Request certificate copies
Data stays in Oman
Stored and processed on servers inside Oman. Your invoices and customer data never leave the country.
10-year retention
Every e-invoice archived and searchable for ten years.
Registered in Oman
Riyada, SMEs Development Authority
JSRS, Joint Supplier Registration SystemOM101460
E-invoicing FAQ

What Oman's mandate means for you.

Straight answers about Fawtara, PINT OM and getting your ERP ready.

Ask our team

Under OTA Decision No. 189/2026: a pilot with around 100 notified large taxpayers began in August 2026; businesses with annual supplies above OMR 5 million start on 1 April 2027; all other VAT-registered businesses start on 1 October 2027. You can check which phase applies to you on the OTA rollout checker.

No. Once your phase starts, invoices must be issued as structured e-invoices in the PINT OM format and exchanged through an accredited service provider. You can still send customers a PDF copy for their reference.

Oman's version of the Peppol international e-invoice standard. It defines the fields every e-invoice must carry, such as seller and buyer VAT numbers, line items and VAT. Connect converts your invoice data to PINT OM for you.

No. Connect works alongside SAP, Oracle, QuickBooks, Zoho and Tally, any other system through the API, SDKs or SFTP, or by bulk upload and the web platform.

Most problems are caught by our checks before the invoice leaves. If one is rejected, the dashboard shows exactly which field to fix, and you can resend it straight away.

Yes. Purchase e-invoices arrive in the same platform, where you can accept or reject them and pass them to your ERP.

API access is for registered customers. Once you sign up, you receive staging credentials, the Swagger reference and SDKs. Production keys follow after testing is signed off.

The web platform, your monthly e-invoices and the included users. Rates for e-invoices above your allowance are confirmed with your quote. Implementation and ERP or API integration are quoted separately. See pricing

In Oman. Every e-invoice is archived in-country and stays searchable, so you can produce it whenever the OTA asks.

Yes. TotallyTech LLC has been accredited by the Oman Tax Authority since 12 October 2026, with TotallySum as its accredited solution and data residency in Oman. You can check the listing on the Fawtara portal. TotallyTech is also an OpenPeppol member and certified to ISO/IEC 27001, ISO 9001 and ISO 22301.

Get ready before your phase begins.

Book a readiness call
  1. 01
    Readiness callWe review your ERP, invoice volumes and which phase applies to you.
  2. 02
    Connect & testYour ERP talks to the sandbox. We fix data gaps together.
  3. 03
    Go liveInvoices flow to the network, and your team watches it all on one dashboard.
WhatsApp Book a readiness call