I'm using Zoho Books for a membership group. Quarterly dues are $390. Frustratingly our members occasionally write an NSF cheque. So I've previously recorded the income (Sales Without Invoice) as $390 and now want record –$390 to show the returned cheque. But the system doesn't accept negative entries like Quicken does. 

So, I created an expense account called NSF Membership Dues and recorded it there. I don't like this solution. Is there a better one?

Thanks,

Richard