My partner fronted some costs related to my business. I'm making payments to reimburse for this expense. What is the best way to show this reimbursement?

Great to have you here in the Community, @nicole-npaulcons

You can create a check to record the reimbursement amount to your personal funds used to purchase a business expense. I'm here to help you accomplish this.

First off, you'll have to enter the expense you purchase for your business. To do so:

1. Go to the Plus icon.
2. Under Vendor, select Expense.
3. Select a vendor.
4. On the Payment account menu, select your personal credit card account.
5. Choose an item or category for your purchase.
6. Enter the amount.
7. Click Save and close

Here's how to complete the process of charging business-related expenses to your personal funds:

1. Go to the Plus icon.
2. Under Vendor, select Check.
3. Select a vendor.
4. On the Payment account menu, select your business account.
5. Choose your equity account on the Category column.
6. Enter the amount.
7. Click Save and close.

Moreover, add reach out to accountant for other methods. Additionally, you may click on this link to learn more about how to use personal funds to pay for business expenses: Pay for business expenses with personal funds

Keep me updated in the comments below. Hope to hear from you soon. Take care always!

@nicole-npaulcons 

You can ignore @Daniela_A 's response.  It's as though your question wasn't even read.

When you have a business expense paid by someone else, and you need to reimburse them, you need to make a journal entry to record the expense for your business and then record a liability for the amount you owe them. 

To do this, first, set up an other current liability account called 'Due to <partner's name>'.  Then, create a journal entry (New > Journal entry): debit the desired expense account and credit the newly created 'Due to <partner's name>' liability account.  It's a good idea to add the vendor under 'Name' on the expense line.  Then, whenever you reimburse your partner, record the same 'Due to <partner's name>' liability account to the payment/check.  This will reduce the amount owed to your partner with each payment.  Going forward, you should record similar transactions the same way.