Fintech
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17/20GST Invoice Checker
Check invoices for GST errors before filing.
Intermediate12h1–2 people17/20 fit
Build GST Invoice Checker for small businesses in india in ~12h with 1–2 people. Stack: Vision LLM + Python + Next.js.
Why it wins: Specific compliance pain with a clear fix.
Build flow
01 · Problem
Wrong GSTINs, tax rates or totals cause filing rejections and lost credit.
02 · Solution
Extract invoice fields, validate GSTIN format and checksum, tax calculations and HSN rates and flag issues.
03 · Build
- 1Extract fields
- 2Validate formats
- 3Recompute tax
- 4Report issues
04 · Demo
Upload an invoice with a wrong total and show the flag.
MVP checklist
- Field extraction
- GSTIN checks
- Tax maths
- Issue report
Tech stack
| Tech | Role | |
|---|---|---|
| Vision LLM | Image understanding | AI |
| Python | Backend / scripting | Backend |
| Next.js | Frontend + API routes | Web |
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