How Much Extra Principal to Pay on Your Mortgage

Quick answer

• Paying extra on your mortgage principal can save you significant money on interest over the life of the loan.
• The decision depends on your financial goals, available cash, and other debt obligations.
• Prioritize high-interest debt before making extra mortgage payments.
• Consider your emergency fund; ensure it’s fully funded before extra payments.
• A small, consistent extra payment can have a large impact over time.
• Use online mortgage payoff calculators to estimate savings.

Who this is for

• Homeowners looking to reduce their mortgage debt faster.
• Individuals seeking to build equity more quickly and potentially sell their home sooner.
• People who have a solid emergency fund and other high-interest debts under control.

What to check first (before you act)

Goal and timeline

Before sending an extra payment, clarify why you want to pay down your mortgage faster and by when. Are you aiming to be debt-free by a certain age, or do you want to free up cash flow sooner? Your goal dictates the urgency and strategy. For example, wanting to be mortgage-free in 10 years requires a much more aggressive approach than simply wanting to save a little on interest over 30 years.

Current cash flow

Understand your monthly income and expenses thoroughly. Can you comfortably afford to make an extra payment without straining your budget? Look at your spending patterns and identify areas where you might be able to trim expenses to free up funds for additional principal payments. A consistent surplus is key.

Emergency fund or safety buffer

Ensure you have a robust emergency fund in place. This fund should cover 3-6 months of essential living expenses. Paying extra on your mortgage is a great financial move, but not if it leaves you vulnerable to unexpected job loss, medical bills, or major home repairs. Prioritize this safety net.

Debt and interest rates

List all your debts, including credit cards, auto loans, and personal loans, along with their interest rates. High-interest debt (typically anything above 6-8%) often offers a better return on investment when paid down aggressively before focusing on your mortgage. Compare your mortgage interest rate to these other rates.

Credit impact

Making extra principal payments generally has a positive, though indirect, impact on your credit. It demonstrates financial responsibility and can improve your debt-to-income ratio over time. However, it won’t directly boost your credit score in the short term like timely payments or new credit accounts.

Step-by-step (simple workflow)

1. Review your mortgage statement

• What to do: Locate your latest mortgage statement. Identify the current principal balance, interest rate, and monthly payment amount.
• What “good” looks like: You can easily find and understand all the key details of your mortgage.
• Common mistake and how to avoid it: Not knowing your exact principal balance or interest rate. Avoid this by bookmarking your lender’s online portal or keeping statements organized.

2. Assess your financial health

• What to do: Review your budget, savings accounts, and other debts.
• What “good” looks like: You have a clear picture of your income, expenses, savings, and all outstanding debts.
• Common mistake and how to avoid it: Making assumptions about your cash flow or savings. Avoid this by tracking your spending for at least a month.

3. Check your emergency fund

• What to do: Confirm your emergency fund is adequately funded for 3-6 months of essential expenses.
• What “good” looks like: You have a dedicated savings account with enough cash to cover unexpected events without touching your mortgage payment money.
• Common mistake and how to avoid it: Underestimating your monthly expenses. Avoid this by creating a detailed list of all your necessary bills.

4. Prioritize high-interest debt

• What to do: Compare your mortgage interest rate to rates on other debts.
• What “good” looks like: You know which debts have the highest interest rates.
• Common mistake and how to avoid it: Focusing on the mortgage when you have credit card debt with much higher interest. Avoid this by ranking your debts from highest to lowest interest rate.

5. Determine your extra payment amount

• What to do: Decide how much extra you can comfortably afford to pay each month. This could be a fixed amount or a percentage of your payment.
• What “good” looks like: You’ve identified a sustainable amount that won’t jeopardize your budget or other financial goals.
• Common mistake and how to avoid it: Overcommitting to an amount you can’t consistently pay. Avoid this by starting small and increasing it later if possible.

6. Understand your lender’s process

• What to do: Contact your mortgage lender or check their website to understand how to apply extra payments to principal.
• What “good” looks like: You know whether to send a separate check, specify on your payment, or use an online portal.
• Common mistake and how to avoid it: Sending extra money without clear instructions, leading it to be applied to the next month’s payment instead of principal. Avoid this by confirming the process with your lender.

7. Make your first extra payment

• What to do: Send your payment according to your lender’s instructions, ensuring the extra amount is clearly designated for principal.
• What “good” looks like: Your payment is processed correctly, and your next statement shows a slightly lower principal balance.
• Common mistake and how to avoid it: Forgetting to specify “principal only.” Avoid this by double-checking your payment details before submitting.

8. Automate if possible

• What to do: Set up automatic payments for your regular mortgage plus the extra principal amount, if your lender allows.
• What “good” looks like: Consistent extra payments are made without you having to remember each month.
• Common mistake and how to avoid it: Relying on manual payments, which can lead to missed payments. Automating reduces this risk.

9. Monitor your progress

• What to do: Review your mortgage statements periodically to see the impact of your extra payments.
• What “good” looks like: Your principal balance is decreasing faster than scheduled, and you can see the estimated interest savings.
• Common mistake and how to avoid it: Not tracking progress, which can lead to discouragement. Use online calculators to visualize your savings.

10. Re-evaluate periodically

• What to do: At least annually, review your financial situation and your mortgage payoff goals.
• What “good” looks like: You can adjust your extra payment amount based on changes in your income or expenses.
• Common mistake and how to avoid it: Sticking to an old plan when your circumstances have changed. Re-evaluation ensures your strategy remains relevant.

Common mistakes (and what happens if you ignore them)

Mistake	What it causes	Fix
Not funding an emergency fund first	Financial vulnerability to unexpected expenses; may need to tap into retirement or take on new debt.	Build and maintain a 3-6 month emergency fund before making extra mortgage payments.
Ignoring high-interest debt	Paying significantly more in interest on other loans than you save on your mortgage, leading to slower overall wealth building.	Prioritize paying off debts with interest rates higher than your mortgage before making extra principal payments.
Not specifying “principal only” on extra payments	The extra funds may be applied to the next month’s payment, negating the intended principal reduction.	Always clearly instruct your lender, in writing or via their designated system, that extra payments are for principal reduction only.
Making inconsistent extra payments	Significantly less interest saved and a longer payoff time than planned.	Set up automatic payments for the extra amount or budget for it consistently each month.
Overcommitting financially	Stress, inability to meet other financial obligations, potential need to stop extra payments, or even miss payments.	Start with a small, manageable extra amount and gradually increase it as your budget allows.
Not understanding the lender’s process	Extra payments being misapplied or not reducing principal as intended.	Contact your lender or check their website to confirm their specific procedures for applying extra payments to principal.
Assuming all extra payments go to principal	Some lenders may not automatically apply them correctly, especially with bi-weekly payment plans.	Always verify with your lender that extra payments are indeed reducing your principal balance.
Not using a mortgage payoff calculator	Lack of motivation and difficulty visualizing the long-term benefits of extra payments.	Use online tools to see how much interest you’ll save and how much sooner you’ll pay off your mortgage with different extra payment amounts.
Not considering prepayment penalties	Unexpected fees that can offset savings. (Note: Many standard mortgages in the US do not have these.)	Check your mortgage contract for any prepayment penalties, though they are rare on typical U.S. residential mortgages.
Forgetting about other financial goals	Neglecting other important savings or investment opportunities that might offer better returns.	Balance mortgage payoff with other goals like retirement savings, investing, or saving for other major purchases.

Decision rules (simple if/then)

• If your credit card interest rate is above 10%, then pay down credit card debt first because the guaranteed savings are much higher than mortgage interest savings.
• If you have less than 3 months of living expenses saved in an emergency fund, then focus on building your emergency fund before making extra mortgage payments because unexpected events can derail your finances.
• If your mortgage interest rate is 4% or lower, then consider investing the extra money instead of paying down the mortgage because potential investment returns may exceed mortgage interest savings.
• If you are within 5-10 years of your desired retirement date, then paying down your mortgage can be a good strategy to reduce expenses in retirement because a paid-off home provides financial security.
• If your lender’s process for applying extra payments to principal is unclear, then contact them directly to confirm the procedure because misapplied payments can negate your efforts.
• If you can consistently afford to add $100-$200 extra to your monthly mortgage payment, then do so because even small, regular additional payments significantly shorten loan terms and reduce interest.
• If you have a fixed-rate mortgage, then the risk of paying extra is low, but if you have an adjustable-rate mortgage with potential for future increases, then paying down principal offers more certainty.
• If you are considering selling your home in the next few years, then paying extra principal can be beneficial to build equity faster, potentially allowing you to avoid private mortgage insurance (PMI) sooner or increase your profit.
• If you have student loans with interest rates higher than your mortgage, then prioritize paying those off first because the guaranteed savings are usually greater.
• If your goal is simply to reduce the total interest paid over the life of the loan, then making extra principal payments is a sound strategy, especially if your mortgage rate is moderate to high.
• If you prefer the psychological benefit of being debt-free sooner, then paying extra principal on your mortgage can provide a strong sense of accomplishment and financial freedom.

FAQ

How much extra principal should I pay per month?

There’s no single magic number. A common recommendation is to add at least 1/12th of your monthly payment as an extra principal payment each month, effectively making one extra payment per year. However, you can pay more if your budget allows.

Will paying extra principal lower my credit score?

No, paying extra principal on your mortgage generally has a positive, indirect effect on your credit by improving your debt-to-income ratio over time and demonstrating financial responsibility. It doesn’t directly impact your score like opening new accounts or making on-time payments.

What’s the difference between an extra principal payment and an extra full payment?

An extra principal payment specifically targets reducing the loan’s principal balance. An extra full payment would cover the next month’s principal and interest, effectively advancing your due date but not necessarily accelerating principal reduction as much.

Can I pay extra principal on an FHA or VA loan?

Yes, you can generally make extra principal payments on FHA and VA loans. It’s always best to confirm with your specific lender, but these loans typically do not have prepayment penalties.

How do I ensure my extra payment goes to principal?

You must explicitly tell your lender. This usually involves writing “principal only” on your check, specifying it in your online payment portal, or contacting them to set up automatic principal-only payments. Otherwise, it might be applied to your next scheduled payment.

What is a bi-weekly payment plan?

A bi-weekly plan involves paying half of your monthly mortgage payment every two weeks. Since there are 52 weeks in a year, this results in 26 half-payments, which equals 13 full monthly payments annually (one extra payment). Ensure your lender applies the extra payment directly to principal.

Should I pay extra if my mortgage rate is very low (e.g., 3%)?

This is a personal decision. If your mortgage rate is very low, you might get a better guaranteed return by investing the extra money in the stock market or other assets. However, paying down a low-rate mortgage still offers a guaranteed return equal to the interest rate and the peace of mind of being debt-free.

What happens if my lender misapplies my extra payment?

If your lender incorrectly applies an extra payment, it could be applied to the next month’s payment instead of principal. This would mean you aren’t saving as much interest as you intended. Document all your extra payments and review your statements carefully. If you find an error, contact your lender immediately.

What this page does NOT cover (and where to go next)

• Refinancing your mortgage: This page focuses on making extra payments to your current loan. If you’re looking to change your interest rate or loan terms, refinancing is a different strategy.
• Mortgage interest tax deductions: While paying down principal saves you money, the tax implications of mortgage interest deductions are a separate topic.
• Investing strategies: This article assumes you’ve considered other investment opportunities. For advice on where to invest, consult a financial advisor or explore resources on investment basics.
• Home equity loans or HELOCs: These are ways to borrow against your home’s equity, which is the opposite of paying down principal faster.
• Specific mortgage products: Details about different types of mortgages (e.g., adjustable-rate vs. fixed-rate) and their specific features are beyond the scope here.