E-Invoicing Core Engine
The high-performance electronic invoicing foundation for Philippine businesses. Generate strictly sequential 9-digit official series, automate 12% statutory VAT breakdowns, and stream verified BIR receipts via sub-second BullMQ background workers.
Six Pillars of Philippine E-Invoicing
Every requirement enforced under BIR Revenue Regulations 8-2022 and 16-2023 is automated at the database layer with zero human intervention.
Monotonic 9-Digit Series
Guaranteed sequential numbering formatted as SI-YYYY-XXXXXXXXX. Database locks ensure no gaps or duplicate numbers can ever be issued even during high-traffic flash sales.
BullMQ Background PDF Queues
Receipts render asynchronously on dedicated workers without blocking your checkout pipeline. Emits pixel-perfect 80mm thermal slips and corporate A4 invoice PDFs in under 150 milliseconds.
12% Statutory VAT Engine
Full support for dual VAT lines: VATable Sales, 12% Output Tax, VAT-Exempt Sales, and 0% Zero-Rated export transactions with automated rounding down to the exact centavo.
Idempotency Guard
Send Idempotency-Key headers with any invoice submission. Network disconnects and duplicate retries replay the original invoice without incrementing counters.
BIR 2307 Withholding Deductions
Corporate B2B clients can automatically deduct 1% or 2% Expanded Withholding Tax (EWT). The engine records both Gross Due, Tax Withheld, and Net Receivable amounts.
Scannable QR Ph Audit Stamp
Every generated receipt embeds a secure QR code encoding company TIN, invoice series, and HMAC cryptographic checksum for instant mobile validation during BIR tax audits.
Experience Dynamic Tax & Series Computation
Select customer tax treatments and quantity to observe how the E-Invoicing Core engine computes VATable fractions, statutory discounts, and generates the sequential record.
{
"id": "inv_live_9a87f1c2",
"invoice_no": "SI-2026-00000042",
"status": "issued",
"customer": {
"name": "Maria Santos",
"type": "REGULAR"
},
"financials": {
"gross_amount": 250000,
"discount_amount": 0,
"vatable_sales": 223214,
"vat_amount": 26786,
"withholding_tax_2307": 0,
"total_due": 250000,
"currency": "PHP"
},
"receipt_url": "https://api.sphere-invoxa.ph/v1/invoices/inv_live_9a87f1c2/receipt.pdf"
}Integrate Official Invoicing in Under 5 Minutes
Connect your Point-of-Sale terminal, Shopify store, ERP, or custom web platform directly to the accredited E-Invoicing Core API with lightweight client SDKs.
curl -X POST "https://api-production-618c.up.railway.app/v1/invoices" \
-H "Authorization: Bearer sp_live_9f82d1c0..." \
-H "Content-Type: application/json" \
-H "Idempotency-Key: ord_2026_98712" \
-d '{
"invoice_number": "AUTO",
"customer": {
"name": "Maria Santos",
"tin": "123-456-789-000",
"customer_type": "regular"
},
"items": [
{
"description": "Enterprise SaaS Seat License",
"quantity": 2,
"unit_price": 125000,
"is_vatable": true
}
]
}'Frequently Asked Questions
Common inquiries regarding sequential series generation and BIR compliance.
How does SphereINVOXA guarantee that sequential 9-digit series numbers are never skipped?
Our core uses an isolated sequence coordinator that runs atomic increment operations inside dedicated database transactions. Even when thousands of API requests arrive simultaneously or during network retries, numbers advance monotonically without gaps or duplicate collisions.
Can we customize our invoice prefix and company branding on the receipt?
Yes. Under your workspace settings, you can configure your official prefix (e.g., INV- or SI-), upload your high-resolution company logo, and customize thermal header text, RDO accreditation notice, and footer thank-you remarks.
Is E-Invoicing Core compatible with thermal POS receipt printers?
Yes. Our BullMQ PDF worker supports dual output modes: a standard 80mm continuous thermal slip layout ideal for Epson and Star Micronics retail printers, as well as full letter-size A4 invoices for B2B corporate billing.
Ready to Automate Your Official E-Invoicing?
Get started with our free developer sandbox. Issue your first accredited 9-digit sequential receipt in minutes with zero credit card required.