You can take the interest on your RV loans as a tax deduction on your 2018 taxes due April 15, 2019 even if you have a travel trailer or Fifth Wheel. Find out why the stories you are hearing otherwise are fake news before you file your taxes! The home mortgage interest deduction is available to everyone with an RV loan no matter if you have a Class A, Class C, Fifth Wheel, Travel Trailer, or Van.