each company in QBO is a separate subscription, how much depends on what flavor of QBO you choose, intuit does offer a slight discount when you have multiple subscriptions under the same account

in desktop, you can have as many companies as your hard drive can hold for the one price

Resolution for 'cost per mth issue: 'We have 4 companies that we are thinking of changing to Quick Books. How much will that cost per mth?' available: Yes.

The cost per mth 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 cost per mth issue yourself by looking for a resolution described in the article. If it is a complex cost per mth issue or you are unable to solve the issue, you may contact us by clicking here or by using other cost per mth support options.

For more information about resolving issues related to cost per mth in Quickbooks/QBO or to get support for the issue 'We have 4 companies that we are thinking of changing to Quick Books. How much will that cost per mth?', click the link below: