GST Rate Change — Effective 22-Sep-2025

1. Backup MargERP data (important).
2. Install GST patch and confirm version in Menu → GST → GST Tax Rates.
3. Enter company and confirm current financial year.
4. Set 12% → Yes (recommended). Keep 18% → No (recommended). Review 28% HSNs.
5. Shift OLD MRP to H-Rate and Shift MRP → All (recommended).
6. Type exact confirm phrase: PLEASE CHANGE MY GST.
7. Test invoices, verify HSN/MRP, then resume live billing.

✅ Recommended: Follow full step-by-step in this guide. Do not skip backup or tests.

• 📌 Backup: Take a full backup before you start.
• 📌 Effective Date: These changes apply from 22-Sep-2025. Bill using new MRP from this date.
• 📌 Print MRP: Government did not require printing both old & new MRP together.
• 📌 Old Transactions: Old sales/purchases/returns remain on old GST unless changed manually.
• 📌 Old-dated bills during billing: Press F2 to change GST for that bill. If asked to update item master, choose NO unless you intentionally want to change the master.
• 📌 Support: Call 7054796540,7310105073 or WhatsApp text (text only — no images/videos/calls).

✅ Recommended: Read these notes and confirm backup before proceeding.

Why: Without the patch the GST utility and the new options won't be visible.

1. Download patch from: https://download.margcompusoft.com/softwares/gst.zip
2. Close MargERP if open, then open it again — the patch usually auto-applies from your Downloads folder.
3. If patch did not auto-apply, copy the downloaded file into the MargERP installation folder and restart MargERP.
4. 👉 Menu path to check: Menu → GST → GST Tax Rates — top of screen will show the GST patch version.

✅ Recommended: Update to GST Version 19-Sep-2025 or later before doing anything else.

• Take a full backup — keep a copy in a safe folder.
• Enter / login to the company where changes must be applied.
• Ensure the current financial year is selected.

✅ Recommended: Do not proceed without correct company & year and a verified backup.

Why: Government moved many 12% items to 5% (some to 0%).

👉 Menu path: Menu → GST → GST Tax Rates

• Set GST Structure 12% to Yes (this will target all items currently at 12%).
• Choose Want to Change MRP → Current Tax Basis if this is the first GST/MRP change you run.
• If running the change again later, choose Old Tax Basis.
• Do not change the Replace MRP ratio shown — keep default to avoid unrelated MRP shifts.

✅ Recommended: Set 12% → Yes, use Current Tax Basis, keep ratio default.

Why: 18% slab is mixed — some HSNs stay at 18%, some reduce to 5%, and a few to 0%.

👉 Menu path: Menu → GST → GST Tax Rates

• Set GST Structure 18% to No (safe default — avoid bulk change).
• To change specific 18% HSNs, go to Menu → Masters → Master → HSN/SAC Master and edit only the HSNs that need updating.

✅ Recommended: Keep 18% → No. Edit selective HSNs in HSN/SAC Master if needed.

Why: Many 28% items are reduced to 18%; certain luxury/sin items may move to 40%.

👉 Menu path: Menu → GST → GST Tax Rates

• Do not assume all 28% → 18% automatically — verify the HSN list for exceptions.
• Change only after checking HSN details in Masters if required.

✅ Recommended: Review HSNs carefully before any bulk change of 28% items.

Why: We save the old MRP so you can check / restore if needed.

👉 Menu path: Menu → GST → GST Tax Rates (Shift MRP option)

• Shift OLD MRP in: H-Rate (default) — stores previous MRP value.
• Shift MRP: All — recommended so every affected item keeps old MRP saved.

✅ Recommended: Shift OLD MRP → H-Rate and Shift MRP → All.

👉 In the GST utility (Menu → GST → GST Tax Rates) you must type the confirmation phrase exactly:

PLEASE CHANGE MY GST

✅ Recommended: Type the phrase exactly (all caps) so the system accepts and processes changes.

Once confirmed, the system will:

• Apply GST changes: 12% → mostly 5% (some 0%); 28% → mostly 18% (some 40%); 18% changes only if you changed HSNs.
• Recalculate MRPs proportionally (according to the Replace MRP ratio you left as default).
• Save old MRPs into H-Rate for every shifted item.

Important: Historical transactions (past sales/purchases/returns) remain unchanged unless you edit them manually.

✅ Recommended: Let the process finish without interruption; then do post-checks.

• Check sample items: Menu → Masters → Master → HSN/SAC Master — confirm new GST and H-Rate saved old MRP.
• Create a sample invoice(s) and verify printed MRP and GST on bill.
• Run GST summary/report and confirm totals.

✅ Recommended: Test with 1–3 invoices and only resume live billing when correct.

• Government has not required printing old + new MRP on bills — follow your business policy.
• Do not change Replace MRP ratio unless you understand the math — changing it may change MRP unrelatedly.
• When changing MRP second time, prefer Old Tax Basis to properly reflect old transactions.
• For old-dated invoices created during billing, press F2 to update CGST/SGST/IGST according to old rate.

✅ Recommended: Keep records/export of pre-change item master and the H-Rate backup for audits.

✅ Recommended: Do not use these multipliers for final billing decisions until verified.

• Call: 7054796540,7310105073
• WhatsApp: send text message only (do not send images/videos/calls on WhatsApp).

When contacting support, include: company name, financial year, GST patch version shown in Menu → GST → GST Tax Rates, and a short description of the issue.

✅ Recommended: If unsure, pause and call support — do not proceed without backup.

1. 01_gst_version.png — GST → GST Tax Rates (version line)
2. 02_gst_tax_rates.png — GST Tax Rates main screen
3. 03_change_mrp_options.png — Want to Change MRP options
4. 04_shift_mrp.png — Shift MRP options
5. 05_confirm_box.png — Confirmation box where you type phrase
6. 06_hsn_master.png — Masters → HSN/SAC Master screen
7. 07_item_mrp.png — Item page showing H-Rate old MRP / new MRP
8. 08_billing_f2.png — Billing screen showing F2 adjustment

If a file is missing the guide will hide the image automatically (no broken image shown).