I got a bonus and my tax refund that could cover most of sinking funds for 2020. Is that a crazy option, or should I put it towards debt and then keep saving for my sinking funds ? Then use my sinking fund money each month for debt. My sinking funds include ; car maintenance, insurance condo, new glasses, car registration safety etc. My friends and I don't exchange for bday or Christmas so I dont save for those and no family. Plus I'm still working full time My debt is around 15k @ 3. 50 % interest.