I’ve been approached twice about co-signing on loans, once for a close friend and once for a family member. Thankfully I said no both times. Fast forward a few years and although one of them found another co-signer and the other was able to get the loan on their own, they both ended up defaulting.
Talk about dodging bullets!!
All of that to say, my answer would ALWAYS be no when it comes to co-signing loans. However, if you want to let them down gently, just say that you’re planning to buy a (*insert large purchase: house, car, etc.*) in the next year and really can’t afford to have any additional debt on your credit report.
Hope that helps!