what is floating interest rate on home loan

A floating interest rate, also known as a variable interest rate, on a home loan refers to an interest rate that fluctuates with the market benchmark. Unlike fixed interest rates, which remain the same throughout the loan tenure, floating interest rates adjust periodically as per changes in the lending institution’s base rate or a reference rate such as the repo rate.

How does a Floating Interest Rate Work?

A floating interest rate is determined by adding a margin or spread to the benchmark rate. The margin is the profit margin for the lender and remains fixed throughout the loan tenure. The benchmark rate varies based on a variety of factors, including economic conditions, inflation rates, and monetary policy decisions. Here is a step-by-step explanation of how a floating interest rate works:

  1. Step 1: The borrower and lender agree upon a margin that will be added to the benchmark rate.
  2. Step 2: The benchmark rate is monitored periodically, usually once every few months or as specified in the loan agreement.
  3. Step 3: If the benchmark rate decreases, the interest payable on the home loan reduces, resulting in lower monthly installments.
  4. Step 4: Conversely, if the benchmark rate increases, the interest payable on the loan increases, leading to higher monthly installments.
  5. Step 5: The floating interest rate continues to adjust as per the changes in the benchmark rate until the loan tenure ends or until the borrower switches to a different type of interest rate.

Pros and Cons of Floating Interest Rates


  • Lower Initial Interest Rates: Floating interest rates often start lower than fixed rates, making them an attractive option for borrowers looking for lower initial monthly payments.
  • Flexibility: Borrowers have the flexibility to benefit from potential interest rate reductions in the future.
  • Prepayment Benefits: Many floating interest rate home loans do not have prepayment penalties, allowing borrowers to make additional payments and reduce the overall interest burden.


  • Uncertainty: The unpredictable nature of floating interest rates can make budgeting challenging for borrowers, as the monthly installments can vary throughout the loan tenure.
  • Market Fluctuations: Economic changes and market conditions can lead to substantial increases in interest rates, resulting in higher monthly payments for borrowers.
  • Higher Long-Term Costs: While the initial interest rates may be lower, if interest rates rise significantly over time, the overall cost of the loan can be higher compared to a fixed interest rate loan.

Comparing Floating and Fixed Interest Rates

Here is a table comparing the key differences between floating and fixed interest rates on home loans:

Floating Interest RateFixed Interest Rate
Interest RateFluctuates with market benchmarkRemains fixed throughout the loan tenure
Monthly PaymentsCan vary based on changes in the benchmark rateRemain the same throughout the loan tenure
RiskHigher risk due to potential interest rate fluctuationsLower risk as the interest rate remains fixed
Long-Term CostCan be higher if interest rates increase significantlyRemains the same regardless of market conditions

Factors to Consider Before Opting for a Floating Interest Rate

Before choosing a floating interest rate on a home loan, borrowers should carefully consider the following factors:

  • Market Conditions: Assess the current economic and interest rate scenario to gauge the potential future changes in floating rates.
  • Personal Financial Situation: Evaluate your financial stability and ability to handle fluctuations in monthly installments.
  • Risk Tolerance: Determine your comfort level with uncertainty and market fluctuations.
  • Loan Tenure: Consider the loan tenure and weigh the impact of interest rate fluctuations over the long term.
  • Budgeting Capability: Assess whether you have enough flexibility in your budget to handle potential increases in monthly installments.

In conclusion, a floating interest rate on a home loan is an option where the interest rate varies with market conditions and base rates. It offers flexibility and the potential for lower initial payments but comes with uncertainty and the possibility of higher costs if interest rates rise. Before opting for a floating interest rate, it is essential to evaluate your financial circumstances and determine your risk tolerance.