QB Issue Resolution:

Functionality for GoPayment only allows the 2 digits after the decimal for tax.

In order to process the correct amount of tax, you would need to apply the remaining amount of tax manually as a item.

Resolution for Issue 'GoPayment and 2 digit precision on tax rate' available: Yes (Solved).
Source: Intuit Community forum.

GoPayment and 2 digit precision on tax rate: this 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 issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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