For Accounting Firms
Your clients need CAS registration and EIS transmission before December 31. BlackZero gives you one console to manage all of them. Wholesale pricing. Published margins. Your billing.
The partner console
Every client's CAS status, PTT status, and transmission health — visible at a glance. Drill into any client with one click.
| TIN | Business Name | CAS Status | PTT Status | Last Transmitted | Monthly Invoices |
|---|---|---|---|---|---|
| 123-456-789-000 | Reyes Hardware Trading | Active | Active | 2026-06-04 08:22 | 214 |
| 234-567-890-000 | Magsaysay Medical Supplies | Active | Pending | — awaiting PTT | 0 |
| 345-678-901-000 | Dela Cruz Agrivet Corp. | Pending | Not started | — CAS pending | 0 |
| 456-789-012-000 | Santos & Santos Logistics | Active | Active | 2026-06-04 07:51 | 88 |
| 567-890-123-000 | Villanueva Construction OPC | Active | Expiring | 2026-06-03 18:00 | 37 |
Partner program
We publish our wholesale rates. You set your own pricing. We never contact your clients about pricing.
Refer clients and earn a referral credit. You manage the relationship; BlackZero handles the billing.
Wholesale billing. You invoice your clients at your rate. 20% off published retail pricing.
30% off retail. Priority onboarding support. Dedicated account contact at BlackZero.
40% off retail + ₱1/BIR submission rebate after 1,000 transmissions per month.
What firms get
Your margin, your pricing. We invoice you at the wholesale rate. You invoice your clients at whatever rate you choose. We never contact your clients about pricing — that relationship is yours.
Auto-generate registration packets for every client TIN in under 10 minutes each. Annex A-1, A-2, A-3, sample invoice, system guide — all produced from the client's profile. You review and co-sign.
See every transmission, every BIR response, every failed invoice across your entire client book. Transmission failures surface immediately — you know before your client does.
Your responsibility — stated plainly
As the BOA-accredited accountant, you co-sign the CAS Annex A-2 for each client. This is a BIR-required declaration that the accounting system meets the Annex B functional requirements. BlackZero generates the packet. You review and co-sign. The taxpayer signs. BIR evaluates.
Get started
First 90 days of client subscriptions include the ₱1,500 CAS registration add-on at no extra charge. We'll onboard your first five clients together.