Built a GST Invoice Pre-Validator — Looking for CA Feedback & Beta Testers

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Fellow professionals,

Following up on the discussion about e-commerce invoice rejections and 
AI tools for CA work — I've built something specific to this problem 
and would genuinely value your feedback.

The Context:

After seeing multiple threads here about Amazon/Flipkart payment holds 
due to GST invoice errors, I built a pre-validation tool that checks 
invoices against 11 GST rules before clients upload them.

The goal: Catch errors BEFORE they cause payment holds, not after.

What It Checks:

✓ GSTIN format validation (supplier & buyer)
✓ State code verification  
✓ CGST/SGST vs IGST logic (the interstate/intrastate rule)
✓ Tax calculation accuracy
✓ CGST = SGST validation
✓ HSN code format
✓ Valid tax rates (0%, 5%, 12%, 18%, 28%)
✓ Invoice date validation
✓ Taxable amount summation
✓ Invoice total accuracy
✓ Mandatory field presence

Why I'm Posting Here:

I'm looking for 10 CAs/tax professionals to beta test this with their 
e-commerce clients and provide honest feedback:

- Does it actually catch the errors that cause payment holds?
- Is the error messaging clear enough for non-CA clients to understand?
- Are there additional rules we should validate?
- Would this reduce your reactive workload?

Beta Tester Benefits:

✓ Free unlimited validations for your firm (3 months)
✓ White-label option (your firm branding)
✓ Priority feature requests
✓ 50% lifetime discount if you continue after beta
✓ Referral partnership option (30% commission on client referrals)

What I Need From You:

- 5-10 real invoices from your e-commerce clients (data anonymized)
- Honest feedback on accuracy and usefulness
- Suggestions for improvement
- 15-minute feedback call after you've tested it

Not Looking For:

- Sales commitments
- Long-term contracts
- Upfront payments

Just honest professional feedback from people who deal with this 
problem daily.

If you work with e-commerce sellers or a TOOL THAT validates and tells the error before gst portal rejection and want to try this out, please 
reply below or DM me. First 10 respondents get beta access.

Tool: InvoiceCheck.in  
Email: rehansanjay28 @ gmail.com

Looking forward to your inputs.

Regards,
Rehan Sanjay Venkatesan

Replies (1)

check it out : invoicecheck.in

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