Your renewal letter is an opening bid, not your best rate. Renewal is the one moment to switch lenders with almost no friction.
top lenders get measured against your bank's offer, from a single file. If your bank wins, you'll know that too.
At the end of a term, moving lenders is mostly paperwork and rarely a penalty. That paperwork gets handled start to finish.
Rates can be held four to six months out at no cost. A reminder lands well before the term ends, so shopping starts early, not late.