The best time to refinance a home is when interest rates have dropped significantly below your current mortgage rate, when your credit score has improved, or when you want to change your loan terms to either lower your monthly payment or shorten your loan duration. Additionally, refinancing makes sense if you have built up enough home equity, want to remove mortgage insurance, or need cash for home improvements or debt payoff. Timing also depends on how long you plan to stay in the home since refinancing has costs that you need to recover through savings. Typically, refinancing every 2-3 years or when you approach a fixed-rate term ending is advisable. You also need to consider market conditions, your credit score, and whether the savings outweigh refinancing costs. Some loans allow refinancing after just 30 days, while others may require several months or longer waiting periods. It's recommended to review your home loan annually and refinance when sufficient benefits exist.