Kudos to you for giving the bookkeeping a go when you aren't familiar with the ins and outs.
If you are entering a Bill and capturing the tax at that time, yes, that is being counted towards taxes. Every transaction entered, if it has taxes allocated, will be counted. By entering the Bill, then entering the Expense/payment and deleing the Bill you are doing twice the amount of work and can make duplicate entries which you'll have to delete later or you won't have an accurate capture of your P+L.
If you enter a couple of Bills (say from a hardware store), when your husband makes the payment you can enter a payment to that company and select the Bills that he is paying using that method of payment. This will negate your need to enter the Expense using his company debit card.
For example: You have Total Bills $150.00 for the Supplier and you have a Payment made by Debit $135.00 but you don't know which Bills he has paid.
+New
Suppliers
Pay Bills
-- This will open a window for you that outlines all the open Bills. You can filter this by Supplier and it will show you all the Bills for that supplier that need to be paid. You should be able to determine which Bills he paid based on date (most companies apply payment to the oldest Bill first unless instructed otherwise).
You can then enter the payment amount for each Bill that was paid. Then Save. This will ensure that your bank account will be reflected with the payment and the Bills are paid so your Supplier file is up to date.
