Thanks for coming to the Community for help, @schoots.
Are you referring to the taxes included on your items? It seems you're using an external calculator to calculate the amount without the tax. If so, you can select the Inclusive of Tax option on the transaction to let QuickBooks calculate the amount. I've attached a sample screenshot below.
This way, you'll just need to enter the amount with tax included.
Know that I’m only a post away if you have additional questions. I’m more than happy to help. Have an awesome day!
Hi Lilly, no this is not to do with GST specifically. I just want to be able to add numbers together in a field like I could in QB Desktop. For example adding the values of say 4 items into one account from a supplier receipt that may have 20 varied items.
Using arithmetic functions in the value fields of Quantity, Rate and Amount can be used to calculate totals.
For example, if you were to create a new invoice and then in the QTY field you put 8*3 then the final number that will be left is 24.
As stated above, this is possible in the RATE and AMOUNT fields also.
Hope this helps.