Hello there, @Lecker.

Thanks for reaching out to us. Let me guide through the steps in setting up a loan and payment in QuickBooks Desktop.

In order to keep track of the loan and its payments,  you'll need to set up your Liability account.

Here's how:

1. Go to the Lists menu and select Chart of Accounts.
2. Scroll down and click the Account drop-down and choose New.
3. In the Add New Account screen, click the Other Account Types radio button and from the drop-down and choose either. (Other Current Liability: for short-term loans payable over one year. Long Term Liability: for long-term loans payable over a longer period.)
4. Click Continue.
5. Enter a name and number for the account.
6. Click Save & Close.

Once done, you can start set up the vendor (Bank/Lending company). To do that, follow the steps below:

1. From the Vendors menu, click the Vendor Center.
2. Click New Vendor.
3. Enter the name of the bank or the company you need to pay for the loan.
4. Hit Save & Close.

When they start making payments, separate this into two components: payment on a principal and the interest. Record it by making deposits.

Here’s how:

1. Go to the Banking menu and select Make Deposits.
2. If the Payments to Deposit window opens, click Cancel.
3. In the Make Deposits window.
4. In the Deposit To field, then select the account to deposit the loan into.
5. Check the Date and enter an optional Memo.
6. In the From Account column, select the Liability account you created in Step 1.
7. In the Amount column, enter the loan amount.
8. Click Save & Close.

For more reference, you can read this article: Manually track loans.

Also, I encourage seeking help from your accountant so they can offer you some advice on correct accounts to use.

If you have additional questions, feel free to click the Reply button and I'll get back to you.