Digital Invoice Free Trial: 7-Day FBR Sandbox With Your Own Token

Before a finance team commits to any new invoicing tool, they want to confirm one thing: does it behave like our real workflow on FBR’s sandbox, with our own NTN, our own customers, and our own products? Wise Digital Invoice now answers that with a self-service 7-day free trial—no sales call required—so you can exercise FBR digital invoicing end to end before you ever pay.

What the trial gives you

Sign up from /trial/signup with your business name, NTN/CNIC, province, address and phone. The account is reCAPTCHA-protected, your password is hashed at rest, and a verification link is sent to your email. The trial only activates after you click that link—which keeps trials one-per-contact and matches the same delivery path our contact form uses.

Once verified, your company is provisioned with a default invoice number prefix, an 18% default tax rate, and an active trial subscription with limited products, customers and invoices. There is no credit-card prompt. You sign in with the password you chose and start working.

Sandbox-only, by design

Production posting is intentionally disabled for trial accounts. Every validate and submit call you make goes to FBR’s sandbox, so a typo in HS code or buyer NTN cannot trigger a real return. This is the safest environment to learn how the FBR pipeline reacts to your master data—exactly the discipline we describe in our step-by-step FBR API integration guide.

Your token vs the shared lookup token

The FBR sandbox exposes two kinds of endpoints: reference data (HS code list, UoM mapping, customer registration type lookup, tax rates, SRO schedules) and invoice operations (validate and submit). To get you productive on day one, lookups can fall back to a platform-configured bearer when your own token is blank—so dropdowns and code suggestions populate immediately. Invoice validation and submission, however, always use the sandbox access token you paste into FBR Credentials. That separation matters: the invoice the FBR sees is signed with your identity, not ours.

What we recommend you test in seven days

Treat the trial as a checklist, not a tour. The list below is the same one our onboarding sessions follow:

• Create a real customer with the correct registration type and province. This single field drives downstream tax behavior, and is the most common source of FBR rejection errors.
• Add two or three products with the HS codes you actually invoice—not placeholder ones—so the UoM and sale-type dropdowns reflect your real catalog.
• Paste your sandbox FBR token in FBR Credentials and run a single invoice through Validate. A clean pass here tells you 90% of the integration story.
• Submit the same invoice to sandbox and confirm the response payload (invoice number, validation timestamp, FBR reference) lands on the invoice detail page.
• Try a Debit Note against an existing reference number to verify your reverse-flow paperwork.
• Print one invoice using the default print template (and optionally try an alternative layout) so you can confirm the printed totals match what FBR received.

Why we ask for email verification

Two reasons. First, it ensures we can reliably reach the person who owns the trial—setup messages, expiry reminders and upgrade discussions all flow over the same channel. Second, it keeps the trial honest: one verified address means one trial, which protects the sandbox quota for serious evaluators. The email is delivered using your platform’s configured SMTP relay (the same SMTP_HOST/SMTP_USERNAME/SMTP_PASSWORD/SMTP_FROM_EMAIL we use for contact submissions), with a Laravel-mail fallback if SMTP is not set.

What happens after seven days

On day eight your trial subscription expires and sign-in behaviour mirrors any other inactive plan—you can still log in to read your data, but invoice creation and FBR submission are paused until you upgrade. Your customers, products, invoices and tokens are preserved exactly as you left them; upgrading simply re-enables write operations and switches you to production posting when you are ready.

Who the trial is for

The trial is built for the same buyers our paid plans serve: SMEs evaluating digital invoice software in Pakistan, finance teams replacing fragile Excel pipelines, and tax consultants who want a controlled sandbox before recommending a tool to their clients. If you fall in that last group, the reseller panel is worth reviewing alongside the trial.

Ready to start? Open the trial signup form, or read the longer free trial reference page for limit numbers, FAQs and the structured data view.

Trial duration, product and customer limits, and the exact set of fallback lookup endpoints may change between releases. The behaviour described here reflects the current Wise Digital Invoice trial flow: email verification, sandbox-only FBR, your own token for validate/submit, and platform fallback for read-only reference data when your token is blank.