Buildim has a general ledger so you can record credit card transactions the same as in any other bookkeeping software
1- add to chart of accounts a current liability called for example capital one credit card
2- when you want to record a credit card transaction go to general ledger create a journal entry, for example if you swiped your card for a maintenance expense in the amount of 1,000 youshould debit maintenance 1,000 and credit your liability account called capital one credit card for 1,000
so your liability account balnce is always the same amount as your credit card balance
3- if you pay intrest on your credit card add to charts of accounts an expense account called capital one intrest fees and when you got charged intrest create a journal entry debiting capital one intrest expense account and crediting your liability account
4- to record a payment to your credit card you can record a check from your bank account payable to capital one you should add them as a vendor or you can do a journal entry
It simple for anyone with a little bookeeping knowledge and btw thats how its also done in quickbooks or anywhere else
And thats the correct way doing it although there are a few other workaround ways for exemple creating a contra asset or as paying a vendor
So i dont know why you blame buildium it would be the same with any other software
