QBO does not have a setting for that the way desktop does

The closest you can come to it is to turn on prefill with previous transactions in company settings – but that means it does that for all transactions which can cause data entry issues

Resolution for 'account catagory issue: 'When entering expenses or bills, how do I get the account catagory to default for each supplier? Thanks' available: Yes.

The account catagory issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the account catagory issue yourself by looking for a resolution described in the article. If it is a complex account catagory issue or you are unable to solve the issue, you may contact us by clicking here or by using other account catagory support options.

For more information about resolving issues related to account catagory in Quickbooks/QBO or to get support for the issue 'When entering expenses or bills, how do I get the account catagory to default for each supplier? Thanks', click the link below: