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Voucher Accounting

How to Set Up a Sequential Voucher System for Precious Metal Scrap Inward and Settlement

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7 min read
·By JM Labs

When dealing with thousands of grams of gold and silver every day, trust and auditability are your most valuable operational assets. Yet, many precious metal refineries still operate with loose scrap receipts, handwritten dhalai slips, or unsequenced spreadsheets. This lack of tamper-resistant numbering exposes refiners to internal theft, customer reconciliation disputes, and harsh tax penalties during GST audits. Here is how to establish an unalterable sequential voucher system that safeguards every intake, melt, and settlement.

The Danger of Unsequenced Paper and Spreadsheets

In a busy refinery intake counter, multiple staff members receive ornaments, hand over tokens, and coordinate with furnace melting technicians. Without a rigid, automated sequential numbering engine:

  • Missing Slips Go Unnoticed: If receipt slips are not sequentially bound, a lost receipt or an unauthorized cash payout can easily be concealed until end-of-year physical audits.
  • Backdated Modifications: Unregulated entries allow operators to alter weights or assay test results retroactively after an adverse market move.
  • GST and Tax Scrutiny: Tax authorities under Indian GST regulations require that delivery challans, job-work vouchers, and purchase invoices have an unbroken sequential series. Missing numbers in a voucher sequence immediately flag potential off-the-books transactions.

The Four Foundational Voucher Workflows

A professional precious metal refinery requires four distinct, sequentially numbered voucher series to track the complete refining lifecycle:

1. Inward Receipt Voucher (IRV)

Series: IRV-2026-0001

Generated the second raw metal touches the scale. Captures customer KYC/party identity, gross inward weight (to 0.001g precision), estimated visual purity, customer-declared stone deduction, and unique lot identification tag. The customer receives an immediate printed copy or SMS/WhatsApp confirmation.

2. Melting & Assay Slip (MAS)

Series: MAS-2026-0001

Links directly to the parent IRV. Records pre-melt gross, furnace crucible ID, post-melt dhalai bar weight, and exact melting loss. Once the sample undergoes fire assay or XRF spectrometer testing, the verified purity percentage (tunch) is locked into this voucher, calculating the net 999 fine gold yield.

3. Outward Metal Delivery Voucher (MDV)

Series: MDV-2026-0001

Issued whenever a client takes delivery of finished 999 fine bars, minted coins, or silver ingots. Automatically deducts the delivered fine weight from their running metal balance, recording bar serial numbers and receiver signatures.

4. Financial Settlement Voucher (FSV)

Series: FSV-2026-0001

Reconciles refining service fees (dhalai/ghatai), metal-to-cash conversions at spot rate, and RTGS/cash payments. Adjusts the party's dual cash and metal ledgers in a single atomic transaction.

Implementing Close-Ledger & Cutoff Archiving

Even with sequential vouchers, historical records remain vulnerable if staff can modify entries from weeks ago. Professional refineries implement periodic Cutoff Archiving:

  1. Periodic Account Freezing: At weekly or monthly intervals, all verified vouchers up to the cutoff date are sealed and permanently locked against editing.
  2. Audited Balance Carry-Forward: The final verified closing cash and fine metal balances are automatically rolled over as immutable opening balances for the next cycle.
  3. Immutable Historical Snapshots: Any future adjustments must be made via a new, documented credit/debit voucher in the current open period, leaving the audited audit trail intact.

How Refinery Master Enforces Sequential Integrity

Refinery Master was purpose-built to deliver complete operational security without slowing down your intake counter:

  • Automatic Gapless Sequence Generation: Every inward slip, melting lot, delivery voucher, and payment receipt receives an auto-incrementing, tamper-resistant serial number.
  • Real-Time Dual-Ledger Sync: Creating or confirming a voucher updates the client's running cash and fine metal balances immediately across Gold and Silver registers.
  • One-Click Close Ledger Cutoff: Freeze audited historical batches with a single click, carrying forward verified balances and eliminating backdated tampering.
  • Offline-First Reliability: Operates entirely on an encrypted on-device SQLite database. You never have to worry about voucher generation freezing due to poor internet connectivity at your factory.

Eliminate missing slips, audit vulnerabilities, and customer disputes. Bring institutional-grade voucher security to your refinery with Refinery Master free for 30 days.