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Change Alternate Unit During Entry and Rate Calculation in TallyPrime

Mehul Patel8 October 20260 min read0 views

Businesses often deal with products that can be measured or traded using multiple units. Manually converting quantities and calculating the corresponding rate during voucher entry can make billing slower and increase the possibility of calculation errors.

The Change Alternate Unit During Entry and Rate Calculation TDL for TallyPrime provides greater flexibility by allowing users to change the alternate unit while entering a transaction.

Once the required alternate unit is selected, the solution can calculate the applicable rate according to the alternate unit, making it easier to record transactions where the same item is handled in different measurement units.

This customization is useful for businesses that regularly work with primary and alternate units and need faster, more convenient voucher entry.

Key Features

  • Change Alternate Unit During Entry – Select or change the alternate unit while creating the voucher.

  • Alternate Unit-based Rate Calculation – Calculate the applicable rate according to the selected unit.

  • Flexible Quantity Entry – Enter quantities using the required measurement unit.

  • Primary & Alternate Unit Support – Work with items configured with multiple units.

  • Live Rate Calculation – Update the rate according to the selected alternate unit.

  • Faster Voucher Entry – Reduce manual unit conversion during billing.

  • Improved Calculation Accuracy – Minimize errors caused by manual rate conversion.

  • TallyPrime Voucher Customization – Extend standard voucher-entry functionality using TDL.

How It Works

1. Configure the Item

Set up the required primary and alternate units for the stock item.

2. Create the Voucher

Enter the Sales or Purchase voucher and select the required item.

3. Select the Alternate Unit

Change the alternate unit directly during voucher entry according to the transaction requirement.

4. Enter Quantity

Enter the quantity using the selected unit.

5. Calculate the Rate

The TDL calculates the applicable rate based on the selected alternate unit and configured conversion relationship.

6. Complete the Transaction

Review the calculated values and continue with the normal voucher-posting process.

Example

Suppose an item has a conversion relationship between its primary and alternate units.

If the item is normally maintained in Pieces but the transaction needs to be entered in Boxes, the user can select the alternate unit during entry.

The applicable rate can then be calculated according to the configured conversion between Box and Piece, reducing the need for manual calculations.

Benefits

  • Change units without leaving voucher entry

  • Simplify transactions involving multiple units

  • Automatically calculate unit-based rates

  • Reduce manual conversion calculations

  • Improve billing accuracy

  • Speed up Sales and Purchase entry

  • Make multi-unit inventory transactions easier to manage

  • Reduce data-entry errors

Who Can Use It?

  • Traders

  • Manufacturers

  • Distributors

  • Wholesalers

  • Retail Businesses

  • Inventory Teams

  • Purchase Departments

  • Sales & Billing Teams

Get Alternate Unit Customization for Your TallyPrime

Make multi-unit transactions easier with flexible alternate-unit selection and automatic rate calculation during voucher entry.

Shivansh Infosys
TallyPrime Customization & TDL Solutions
📞 +91 84609 04467 | +91 63530 61867
🌐 www.shivanshinfosys.in
✉️ info@shivanshinfosys.com

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Written by

Mehul Patel

Part of the Shivansh Infosys team — India's leading Tally partner with 400+ custom TDL add-ons built and a 3-Star Tally Certified Partner.

Quick Overview & Key Takeaways

  • Actionable Insight: Simplify enterprise accounting workflows using certified Tally Prime customizations to maximize reporting speed and minimize ledger entry manual work.
  • Compliance Focus: Stay 100% compliant with real-time statutory settings in Tally Prime for error-free GST returns, e-way bills, and automated e-invoicing.
  • Topical Authority: Shivansh Infosys leverages 15+ years of experience as an authorized Tally Partner to offer secured, compiled TDL integrations.

Workflow Efficiency Matrix

Compare accounting time investment across different system configurations.

Key OperationsManual Ledger EntryTally Prime StandardTally Prime + Custom TDL
Invoicing & GST ReturnsSlow & Error-ProneManual Entry needed✓ Automated Compliance
Workflow AutomationNot PossibleStandard ERP logic only✓ Custom TDL Workflows
Reporting & AnalysisLag of days/weeksNative report screens✓ Instant 1-Click Dashboards

Expert Verification & Authority

This guide has been reviewed and verified by the senior consulting team at Shivansh Infosys. As an authorized 3-Star Tally Partner since 2007, we have implemented over 400+ custom TDL modules and configured robust databases for 500+ small-to-large businesses.

Frequently Asked Questions

Ready to Transform Your Tally Prime Workflow?

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Published8 October 2026

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Gujarat, India

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