Do you know what you should always do? Tip your landlord. But what if you’re the landlord and nobody tips you? Well, then you’ll have to use some other income sources, such as codes, for example. So, ...

Lea Uradu, J.D., is a Maryland state registered tax preparer, state-certified notary public, certified VITA tax preparer, IRS annual filing season program participant, and tax writer. Zoe Hansen / ...