How does received a $50k gift affect taxes?

[James Piercy]

Hello Everyone,

If my mother is to gift me $50k and I set up a payment plan to repay her, how does that work with taxes?  I had never heard of being taxed on a gift (silly me).  I was originally going to use the gift as a down payment but I learned that gifts can't be used to purchase property, until it becomes "seasoned".  I DO NOT want pay taxes on any kind of money that my mom gives. 

What I want to do is use my mutual funds to purchase a property and replenish the mutual fund with the 50k to make interest, while paying back my mom with no interest.

Does anyone have experience with gift taxing?  The last thing I ever want to do is pay the government twice.

Thank you.