If I leave the tax inclusive gross box unticked, it makes it difficult (impossible to get the supplier invoice totals to work in some instances). This function works well for quoting and invoicing, but is a fail for entering some supplier invoices when there was a purchase order and the price may vary. There still needs to be the option when entering the invoice/bill to enable/disable this function without having to get others to get out of Reckon Accounts, go to single user mode, and then change the setting (for the occasional entry), then go back into preferences to undo, and finally to change back to multi user mode.
By keeping this option selected permanently, all Bills, Quotes (Estimates), Sales Orders and Invoices can be individually toggled to incl or excl tax.
If you need to switch between Net and Gross calculations / data entry methods the checkbox on the form (Bill / Invoice etc..) is then used.