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Hi, 

How i can force odoo 18 to reduce decimal accuracy from 3 to 2.

It was changed from 2 to 3 but later the accountant request to return it to 2.

I need your support urgent please.

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Best Answer

Go to Settings > General Settings, scroll down to the bottom of the page and Activate the developer mode. Then go to Settings > Technical > Database Structure > Decimal Accuracy and update the required setting.

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Best Answer

Hi, 


You can change the decimal precision from the frontend.


- Settings > Tehinacal > Decimal Accuracy




Hope it helps

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Author Best Answer

Dear Paresh Wagh

I tried this way Settings > General Settings, scroll down to the bottom of the page and Activate the developer mode. Then go to Settings > Technical > Database Structure > Decimal Accuracy, but found that i cant Change from 3 to 2, only accepting if i want increase the decimal accuracy.

Can you provide another way if possible, thanks for your support 

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Unfortunately, this is the only way to do it reliably.

Best Answer

Where Odoo Stores Decimal Precision

Odoo uses the model: decimal.precision (or in recent versions, decimal.accuracy or just via res.config.settings depending on the field).

For example:

  • Product Unit of Measure → Product Unit of Measure Precision
  • Accounting (Price, Amounts) → Account precision
  • Currency Rounding → Decimal Places on currency

🔧 Step-by-Step: Change Decimal Precision (back to 2 digits)

Option 1: Update Decimal Precision in UI

  1. Activate Developer Mode
    • Go to Settings → Activate the Developer Mode (⚙️ icon > "Activate Developer Mode")
  2. Go to Technical → Decimal Accuracy
    • Navigate to Settings > Technical > Database Structure > Decimal Accuracy
    • Look for entries like:
      • Product Unit of Measure
      • Account
      • Product Price
      • etc.
  3. Edit the relevant entries
    • Change from 3 to 2
    • Save

✅ That’s it! All relevant views and calculations will now show 2 digits instead of 3.

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