TaxBridge creates a common integration layer between your software and Pakistan’s tax authorities. Build against one canonical invoice and one response envelope — TaxBridge does the rest.
FBR · PRA · SRB · KPRA — more can be added without a client code change.
curl -X POST https://taxbridge.themetasum.com/api/v1/invoices \
-H "Authorization: Bearer tbk_test_9f3a21c7b4d6e8f0_..." \
-H "Content-Type: application/json" \
-H "Idempotency-Key: 0b6d1c4e-7f9a-4a51-8d3c-2e5f7a91b204" \
-H "X-Tax-Authority: PRA" \
-d '{
"invoiceNumber": "INV-10001",
"invoiceDate": "2026-08-10T10:30:00",
"invoiceType": "Sale",
"currency": "PKR",
"paymentMode": "Cash",
"customer": { "name": "Walk-in Customer" },
"items": [{
"description": "Chicken Karahi Full", "hsCode": "11001010",
"quantity": 1, "unitPrice": 1500.00,
"taxRate": 16, "taxAmount": 240.00, "total": 1740.00
}],
"subTotal": 1500.00, "tax": 240.00, "total": 1740.00
}'It is a single API endpoint — POST /api/v1/invoices — that accepts one authority-agnostic invoice payload and fiscalises it with the correct Pakistani tax authority. Your software integrates once; TaxBridge translates to FBR, PRA, SRB or KPRA and returns one standard response.
Your software talks to one API. TaxBridge speaks every authority’s dialect.
Why unify
Without a gateway you build, test, monitor and maintain four separate integrations, and rebuild them whenever an authority changes. TaxBridge centralizes that work.
InvoiceRequest shape{
"success": true,
"data": {
"invoiceId": "INV-10001",
"submissionId": "sub_01J8ZK7M4QW3RTYV6XB2N9C5PD",
"authority": "PRA",
"environment": "sandbox",
"status": "APPROVED",
"authorityInvoiceNumber": "PRA-123456",
"qrCode": "PRA-123456",
"quota": { "limit": 10000, "used": 6501, "remaining": 3499 }
},
"requestId": "REQ-20260810-A1B2C3D4"
}One endpoint, one payload, every Pakistan tax authority.
Just register your business with Sum Cloud POS — it already files fiscal invoices to FBR, PRA, SRB and KPRA for you. No API, no development, nothing to connect or maintain. Start selling with compliant invoices out of the box.