I have a credit card that gives various different interest free terms for purchases above a certain amount. In order to track this I have these separated out as individual debts. For example, we bought a $3000 oven which gets 6 months interest free. I have this as its own debt line with a $500 payment per month.
When I pay the card, I pay the combination of the debt payments plus whatever is owing from general purchases. Ideally I would show this as one transaction in Goodbudget with a split between all of the debt payments, but this is not currently possible. I can see it would be a bit complicated because for each split it would have to show interest/principle etc, but it would be a nice feature.
In the meantime I’m using a work around with a dummy account that I make a transfer to for the full amount and then distribute the separate payments from there.