System Preferences are the on and off switches that change how TamilAccounting behaves day to day. Company Setup holds your identity and number formats; Preferences decides which features appear on screen, how item and customer codes are generated, and how strictly the system enforces stock and invoice rules.
Where to find it
Go to Setup > Company > Preferences.
1. General Settings
| Setting | Effect |
|---|
| Company Logo on Reports | Shows your logo on summary reports such as ledgers and the trial balance. |
| Show QR Code on Invoice Portal | Adds a QR code so customers can reach their invoices by scanning. |
| Use Long Descriptions on Invoices | Prints the item long description on invoice PDFs and popups. |
| Short Name and Name in List | Switches customer and supplier dropdowns between short names and full names. |
| System Elaboration | Simplifies editing for staff who are not accountants. |
| Use Barcode Functionality | Turns on barcode entry across sales, purchase and stock forms. |
| Item Auto ID | Generates item codes automatically instead of asking for one. |
| Customer Auto ID / Supplier Auto ID | Same, for customer and supplier codes. |
| Use Calculated Avg Cost | Inventory reports use calculated average cost rather than static standard cost. |
| Payout Method FIFO/LIFO | The order outstanding bills are offered in when allocating a payment. |
| Show Add Custom Field on Forms | Puts the custom field buttons on transaction entry forms. |
2. Invoicing Settings
| Setting | Effect |
|---|
| Automatic Revaluation Currency Accounts | Revalues currency accounts automatically on transfers between them. |
| Disable Invoice Edit | Stops invoices being changed once created. Required in jurisdictions where a tax invoice is final. |
| Disable Invoice Void | Removes the ability to void a sales invoice. |
| Show Customer Balance | Chooses whether transaction screens show available credit or the outstanding balance. |
| Send Email When New Sales Invoice Generated | Emails the customer automatically as each invoice is raised. |
| Auto Work Order | Creates a work order automatically when a sales order containing a manufacturable item is converted. |
| Is it Manual BOM | Allows the bill of materials to be selected by hand rather than resolved automatically. |
| Put Alternative Tax Include on Docs | Shows the tax-inclusive value on sales and delivery documents. |
| Suppress Tax Rates on Docs | Prints the tax name without the rate. |
| Scan Barcode Scanner with Batch No | Lets the scanner capture batch numbers as well as item codes. |
| Don't Show Reseller Info | Hides reseller details on client invoices. |
| Zakat QR Code | Generates the Zakat QR code on invoices. Available to Saudi companies only. |
Disable Invoice Edit and Disable Invoice Void are compliance controls, not conveniences. Where your tax authority treats an issued invoice as final, switch them on and correct mistakes with a credit note instead.
3. Inventory and POS Settings
| Setting | Effect |
|---|
| Allow Overdraft Limit | Permits cash and bank accounts to go below zero. |
| Restrict Branch Selection | Limits each user to their own branch during transactions. |
| Accumulate Batch | Controls how batch quantities are grouped on stock movements. |
| Allow Negative Inventory | Lets stock go below zero. See the warning below. |
Allow Negative Inventory has the widest reach of any switch here. With it off, deliveries and invoices are blocked when stock is insufficient — which is what keeps stock valuation trustworthy. Turn it on only if your business genuinely ships before goods are received.
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