A home equity loan is a type of secured loan borrowed against the value of your home. The exact amount you are allowed to borrow (either from a bank, a credit union, or a private investor) is determined based on how much equity you have in your home at any given point in time.
But hey, maybe we are getting ahead of ourselves.
What Does Equity Even Mean?
Think of it as the portion of a property’s value that you truly own. It’s calculated by subtracting any outstanding mortgage balance you have from your home’s appraised (or market) value.
For example, if your home is worth $300,000 and you owe $200,000 in mortgages, you are left with $100,000 in equity, some of which can be borrowed. But how much, exactly? This is mainly a choice for the lender. Lenders use a special value called the combined Loan-to-Value ratio to calculate the % of your home’s value they are ready to let you borrow.
In the U.S., most lenders use a combined Loan-To-Value ratio of 80%. However, this may sometimes go higher depending on credit score, income, and applicable state laws. For example, a few specialty credit-union programs may allow higher caps, and certain affordable-housing programs can reach 105% with additional conditions.
For calculating CLTV, we use the following formula:
CLTV = (Current mortgage balance + New home-equity loan/line) ÷ Current appraised value.
What Happens if You Already Have Other Loans?
But hold on, what happens if you have already used your home as collateral for other loans? Don’t worry! You can still benefit from the equity you have in your home. Simply subtract your outstanding liens, loans, and mortgages from the maximum debt you are allowed. And voila! You will end up with the total potential loan amount you can take out.
Remember – if you already have a mortgage or other liens, you need to focus on your Combined Loan To Value ratio. Add your current mortgage balance and the amount you want to borrow, then divide by your home’s appraised value. That percentage is what lenders look at.
What We Offer
Whether you’re thinking of opening a line of credit or taking out a regular loan, there is one thing for sure – there will be lots of maths to do.
Lucky for you, we offer premade smart spreadsheets designed in Excel to make loan calculations and loan repayment tracking much easier!
Our Home Equity Calculator at a Glance
When it comes to loan tracking, it’s all about finding the right tools. Here’s a quick round-up of the most useful features of our Home Equity Loan Calculator:
- Built-in formulae & calculations using basic data manually put in by the user
- Dropdown menus to provide standardized options for loan borrowers
- Tabular information sets to convey vital information efficiently and quickly
- Visual charts showing the amount borrowed against the total interest paid at a glance
- No Macros Required – Fully formula-based for easy customization and safety
- Printable Report – Clean, ready-to-print layout for record-keeping or client sharing
Template In Detail
Once you open the file in Excel or Google Sheets, you’ll find three separate worksheets inside.
Here’s a step-by-step on how you can work around each:
Worksheet 1: Loan amount
This sheet helps you calculate how much loan you can borrow based on your home’s ‘appraised value’, as well as the LTV ratio offered by the lender. Once you input these, we instantly calculate the maximum money you can hope to borrow.
Users also get to factor in the impact of any pre-existing loans, mortgages, and liens on your property, before reaching the final potential loan amount. This value is then carried to the next worksheet, which we now turn to.
Worksheet 2: Loan calculator
This sheet works like any other pre-automated Loan Amortization tool. Start by specifying the basic terms of your loan plan, such as:
- What Annual Interest Rate (AIR) is offered to you by the lender, who may consider a range of factors when determining this, including your credit score and history, loan-to-value (CLTV) ratio, loan amount, and loan term.
- How long is your loan plan expected to last? Most home equity loan plans start at five years, but this can be stretched to between 10 and 30 years, depending on your lender. Generally speaking, the longer your loan term, the more affordable your monthly payments will be.
- How often do you plan to pay back? We offer a comprehensive, market-standard drop-down menu to choose from: Bi-Weekly, Semi-Monthly, Monthly, Quarterly, and Annual payment plans.
- When do you plan to make the first payment? This date helps us create a complete payment schedule to help you stay on top of your loan repayments.
- Which methods do you plan to use to calculate your paid interest on each repayment (Flat or Reducing – see below to understand how these two calculation methods differ)
- Whether you opt to make extra payments annually and/or periodically. By paying on top of your loan payments.
Once you input all these details, we automatically calculate the following for you. This way, you don’t have to bother yourself with all those hefty calculations and complicated formulas:
What We Calculate for You
- Your total number of payments
- Interest rate per period
- How much do you pay per period
- Sum of all your payments
- How much do you pay in interest over the entire loan term
- How much do you save in interest through extra payments
- When can you expect to make your last payment
Rounding option
For easier calculation and consistency, we round off monthly payments to two decimal points. You can also switch off the rounding function. Rounding can leave a small residual that is cleared by a slightly adjusted final payment.
Amortizing Vs. Add-on Methods for Calculating Interest- Which one’s better?
There are two different ways of calculating the interest part of the payment. Let’s explore each:
- Amortizing (standard in the U.S): Interest is charged on the remaining balance after each repayment, so it decreases over time (also known as the reducing method)
- Add-on (or the flat-rate method): The interest rate stays fixed for the entire loan term, and is always charged on the original loaned amount. Not a common method for U.S. home-equity loans but often used in other credit products.
In your Excel sheet, each payment is split into principal and interest.
- If you choose the add-on or flat-rate interest method, both amounts stay fixed throughout the loan. This means you don’t benefit from making early or extra payments, since interest is always calculated on the original loan amount.
- If you choose the amortizing or reducing balance method, interest is recalculated on the remaining balance after each payment. In your sheet, you’ll notice the interest portion (Column G) decreases over time, while the principal portion (Column H) increases until the loan is fully repaid.
So, which one is better?
Borrowers generally prefer reducing loans. Because interest is charged only on the outstanding balance, you save money as you pay down the loan. Extra payments also reduce future interest and can shorten the total loan term. Flat-rate loans, in contrast, are simpler but less flexible and often more expensive in the long run.
Extra/Additional Payments
Want to pay back your loan faster and save thousands in interest? Here’s how you can do that:
Through regular extra payments
This is one of the most useful features of our template. But before we tell you how to work around it, let’s try to understand what’s so great about making extra payments.
Paying extra on top of your regular installment helps you lower your principal amount. This reduces the overall amount of interest you pay on the loan, resulting in immediate savings.
Use this sheet to schedule:
- Extra payments after every n number of months. Let’s say you want to pay an extra sum of 1000 every month, you will simply write in Cell E1. If you want to pay extra every quarter, you’ll write 3, and so on.
- Annual extra payments. Let’s be honest, with tight monthly budgets, it’s not always easy to pay extra every month. That is why we offer you the option to make and track annual extra payments too!
Through irregular additional payments
On top of extra payments that you might have pre-scheduled, you can also make additional payments if you want to.
These can be manually entered in Column F for the occasional lump sum you might have to spare. As you can see, the remaining values in the amortization table are automatically readjusted.
Track Balance Due at a Specific Period
If you don’t want to scan through the entire amortization to check your balance after a certain payment, we have a quick-fix to help you out. On the top-right of the worksheet, you can simply enter the number of the payment (1st payment, 2nd payment, etc.) and we instantly let you see your unpaid balance after that payment. You can also see how much interest you’ve already paid up to that point.
Deduct Taxes (if applicable in your state)
When you take a home equity loan, you pay interest — just like any other loan. But if you’re allowed to deduct that interest from your taxes, it reduces how much you owe in taxes at the end of the year.
For federal taxes, home-equity interest is deductible only if the loan proceeds are used to buy, build, or substantially improve the home that secures the loan, and only if the taxpayer itemizes. There are loan amount caps and other IRS rules to consider – these may vary by state, so make sure you check with your local tax authority or a tax professional for more guidance on deductions in your area.
The bottom line? Even though you’re paying the full interest to the lender, the tax savings can make the loan cheaper overall.
Example
Let’s say, you take a home equity loan of $50,000 at an interest rate of 8%. That means, each year, you pay $4,000 in interest (8% of $50,000)
Your income tax rate is 25%. And you qualify to deduct this loan interest on your taxes under local laws. Now, because the $4,000 interest is tax-deductible, you pay $1,000 less in taxes at the end of the year
(That’s 25% of $4,000 = $1,000 tax savings)
So even though you still paid $4,000 to the lender, you still get $1,000 back when you file your taxes. Makes sense, right?
Home Equity Loan Calculator
This worksheet is designed to help you calculate the available pre-tax equity you have in your home or any other property you own. We do this by asking for basic details about any outstanding loan obligations you may have, where you have used the property as collateral.
You can add details of up to two past loan arrangements using this template. For each, specify the following:
- Remaining loan balance
- Annual Interest Rate*
- Monthly Payments
Once you manually specify these, we instantly tell you how long (in years) it will take for you to pay off the loan completely. In the mainsheet below, we create a combined amortization table where you can see what portion of each payment constitutes interest vs. principal. Note that this sheet only allows users to select a monthly frequency for loan repayment, as opposed to some of our other loan calculators, where you can choose to schedule payments daily, weekly, semi-monthly, etc.
As you can see, your total unpaid loan balance is then subtracted from your home’s current value at any given point in time. This tells you how much pre-tax equity you have in your property.
AIR Vs. APR – What’s the Difference?
Make sure you are adding the annual interest rate (and not the Annual Percentage Rate) when you run the schedule. That is because in U.S. mortgage disclosure, APR includes fees and is different from the interest rate used in amortization formulas.
Calculating Home Value Appreciation Over Time
Now, at this point, you might be wondering: what if the market value of your home increases over time? Don’t worry. All you need to do is figure out your annual appreciation rate (use a negative rate if your home’s value is expected to decline).
Suppose your home is worth $300,000 today, and you estimate that the housing market in your area grows at about 3% per year.
Here’s how it works:
- Year 1: $300,000 × (1 + 0.03) = $309,000
- Year 2: $309,000 × (1 + 0.03) = $318,270
- Year 3: $318,270 × (1 + 0.03) = $327,818
That means, after 3 years, if appreciation stays at 3%, your home would be worth about $327,818. In Cell J17, you can simply specify the number of years beyond which you are looking to calculate your home’s future value.
Note that by entering your monthly payments, you can model different loan types — including fixed-rate amortized loans, interest-only loans, and scenarios with extra monthly payments. Keep in mind that the results are for estimation purposes only. Interest and payments are not rounded, and home appreciation rates can vary widely.
You Might Also Be Interested In…
- Home Equity Line of Credit Tracker
- Simple Interest Loan Calculator
- Loan Amortization Template
- Financial Project Template
- Auto Loan Calculator
- Boat Loan Calculator
Final Thoughts
This Home Equity Loan Calculator is designed to give you a practical way to estimate how much you can borrow, what your repayments may look like, and how extra payments or appreciation can affect your overall loan. While it provides useful insights, remember that results are only projections. Real loan terms depend on your lender, credit profile, tax situation, and state regulations.
Remember to always double-check figures with your lender or financial advisor before making borrowing decisions.
