Negotiating your mortgage rate with lenders is essential, as initial offers are often higher than what you can secure. Key times to negotiate include obtaining a new mortgage, renewing an existing one, or when rates drop. Understanding posted rates, shopping around for better offers, and asking for lower rates can lead to significant savings. Using a mortgage broker can also help find the best deals. Staying informed about interest rates allows you to make advantageous adjustments to your mortgage when opportunities arise.