In standard Odoo Expenses, each expense report line represents a single product/category with one account and one set of taxes.

This creates significant limitations for real-world expense reporting:

• Office supply receipt with stationery (0% tax) + electronics (21% tax) - cannot split correctly
• Restaurant bill with food (10% tax) + alcohol (21% tax) - different tax treatments
• Hotel invoice with room (0% VAT) + breakfast (10% VAT) + parking (21% VAT)
• Travel expense combining flight, hotel, and meals - different accounts for each
• Mixed purchase receipt needing per-line analytic distribution across cost centers

This module adds a "Multi-line Expense" toggle to expense lines. When enabled, the expense becomes a parent container for multiple Expense Lines - each with its own description, product category, account, quantity, price, taxes, and analytic distribution. The total amount automatically sums across all lines, and each line generates its own journal entry lines during accounting.

Step 1: Create a New Expense

Go to Expenses -> My Expenses -> Create. Fill in basic expense details as usual.

Step 2: Enable Multi-line Mode

Toggle the "Multi-line Expense" switch at the top of the expense form. The interface changes to show a new "Expense Lines" tab.

Note:A seed line is automatically created from the original expense values to get you started.

Step 3: Add Itemized Sub-Lines

In the "Expense Lines" tab, add or edit lines. Each line has:

• Category (Product): Select expense category
• Description: Detailed description of the line item
• Account: Accounting account for this line
• Quantity & Unit Price: Quantity and unit price
• Taxes: Select applicable tax rates per line
• Analytic Distribution: Allocate to analytic accounts

Step 4: Verify Total Amount

The expense total automatically sums all sub-line amounts. You can see the running total at the bottom of the lines table.

Step 5: Review Journal Items (Preview)

Switch to the "Journal Items" tab to preview the accounting entries that will be created. Each sub-line generates its own debit/credit entries with the assigned account, taxes, and analytic distribution.

Step 6: Submit Expense Report

Add the expense to a report and submit for approval. When approved and validated:

• Vendor Bill: Each sub-line becomes a separate journal entry line
• Company-Paid: Each sub-line contributes to the payment base line calculation
• Accounting entries respect per-line accounts, taxes, and analytic distributions