CLTV calculator
A 280,000 first mortgage plus a 40,000 HELOC on a 400,000 appraisal is 80% CLTV, even though first-lien LTV is only 70%. List every lien to see the combined ratio, each loan's share and the equity that remains. Free in your browser.
- Free
- Runs in your browser
- No sign-up
- Your data stays on your device
Run — free
Worked example
- Property value
- 400,000
- Total loan balance
- 320,000
- Loan count
- 2
- Ltv percent
- 70
- Cltv percent
- 80
Combined loan-to-value, or CLTV, is the share of a property's appraised value that is already pledged to every loan secured by that property: first mortgage, second mortgage, HELOC draw, and any other recorded lien, added together, then divided by the appraisal and scaled to a percent. Originators, underwriters, and refinance shops use that single percentage to decide whether a piggyback, cash-out, or HELOC still fits the product box, and whether private mortgage insurance or a second-lien guideline applies. This CLTV calculator accepts the appraised property value and a list of outstanding loan balances, sums the liens, divides by the value, and returns the combined loan-to-value ratio as a percentage together with remaining equity.
What combined loan-to-value adds that first-lien LTV leaves out
Loan-to-value, or LTV, usually looks at one first-lien mortgage against the appraised value. Combined loan-to-value, or CLTV, adds every other claim on the same collateral before dividing: a second mortgage, a home-equity line of credit that has been drawn, a piggyback purchase-money second, or any other outstanding balance secured by the property. A two-hundred-eighty-thousand first mortgage plus a forty-thousand HELOC on a four-hundred-thousand appraisal is eighty percent CLTV, even though first-lien LTV is only seventy percent.
That gap is why underwriting desks run both numbers: a conventional eighty-percent product box can fail on CLTV even when first-lien LTV still looks comfortable. Unused HELOC credit that has not been drawn is not a loan balance, so it does not enter this CLTV identity; that unused room is a different ratio often called HCLTV or TLTV. This calculator does not pull an appraisal, does not look up a credit report, does not amortize a payment, and does not convert currencies.
You supply the appraisal and the outstanding balances in one currency; the calculator adds the liens, divides by the value, and rounds the percentage half-up to six decimal places so goldens compare byte-for-byte across runtimes. This is a combined loan-to-value from current balances, not a first-lien LTV product, not a payment quote, and not an HCLTV that counts undrawn credit.
Where a CLTV calculator earns its keep
Loan officers screening a cash-out or a piggyback use a CLTV calculator to add the new second lien to the existing first mortgage before they quote a product that still looks fine on first-lien LTV alone. Refinance shops and title teams drop current balances from the payoff letters and the appraised value from the new report, and they compare CLTV with a first-lien LTV and a debt-service coverage case rather than treating any one ratio as a substitute.
This is a different search and a different job from capitalization rate, from debt-service coverage, from PMI month-count estimates, and from auto-loan EMI: those tools price unlevered yield, income against loan payments, insurance until a target balance, or a vehicle installment. Combined loan-to-value prices every outstanding lien against today's appraisal. Failed validation does not consume balance.
What you can do with it
Piggyback and cash-out screens
Add a proposed second lien to the existing first mortgage and the current appraisal so the combined ratio is visible before you quote a product box.
Title and underwriting cross-checks
Pin combined loan-to-value next to first-lien LTV so a credit memo shows every recorded balance, not only the first mortgage.
FAQ
What happens if the property value is zero or negative?
Combined loan-to-value is undefined when property value is zero or negative, and those failures are not billed.
What is the difference between LTV, CLTV, and HCLTV?
LTV uses one first-lien balance against the appraisal. CLTV adds every other outstanding lien on the same property. HCLTV (sometimes TLTV) also adds unused HELOC credit that has not been drawn.
Can CLTV be over 100 percent?
A negative individual loan balance is rejected; an underwater total is not.
Should I include the unused part of a HELOC?
No. Only the amount you have actually drawn is a loan balance, so only that enters CLTV. Undrawn credit on the line belongs to a different ratio, often called HCLTV or TLTV.
Why can a loan fail on CLTV when LTV looks fine?
Because a second mortgage or a drawn HELOC adds to the first lien. In the example the first mortgage alone is 70% of value, but the combined figure is already 80%, so a conventional 80% product can fail on CLTV while first-lien LTV still looks comfortable.
Related tools
For developers — API access
Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.
API endpoint
Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.
Call it from your stack
curl -X POST https://api.kit.forhosting.com/fin/cltv \
-H "Authorization: Bearer $KIT_KEY" \
-H "Content-Type: application/json" \
-d '{"property_value":400000,"loans":[{"name":"First mortgage","balance":280000},{"name":"HELOC","balance":40000}]}'const res = await fetch("https://api.kit.forhosting.com/fin/cltv", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.KIT_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"property_value": 400000,
"loans": [
{
"name": "First mortgage",
"balance": 280000
},
{
"name": "HELOC",
"balance": 40000
}
]
})
});
const { task_id } = await res.json();import os, requests
res = requests.post(
"https://api.kit.forhosting.com/fin/cltv",
headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
json={
"property_value": 400000,
"loans": [
{
"name": "First mortgage",
"balance": 280000
},
{
"name": "HELOC",
"balance": 40000
}
]
},
)
task_id = res.json()["task_id"]<?php
$res = file_get_contents("https://api.kit.forhosting.com/fin/cltv", false, stream_context_create([
"http" => [
"method" => "POST",
"header" => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
"content" => '{"property_value":400000,"loans":[{"name":"First mortgage","balance":280000},{"name":"HELOC","balance":40000}]}',
],
]));
$task = json_decode($res, true);body := bytes.NewBufferString(`{"property_value":400000,"loans":[{"name":"First mortgage","balance":280000},{"name":"HELOC","balance":40000}]}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/fin/cltv", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)Example request
{
"property_value": 400000,
"loans": [
{
"name": "First mortgage",
"balance": 280000
},
{
"name": "HELOC",
"balance": 40000
}
]
}Example response
{
"task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
"type": "fin.cltv",
"status": "queued",
"_links": {
"result": "/tasks/tsk_…/result"
}
}The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.
Pricing
Published price — no tokens, no invented credits. A failed task is never charged.
Limits
max_items | 40 |
Errors
| HTTP | Code | Meaning |
|---|---|---|
401 | unauthorized | Missing or invalid API key. |
402 | insufficient_balance | Your balance doesn't cover the task price. |
404 | unknown_type | That task type doesn't exist. |
429 | rate_limited | Too many requests. Use the webhook instead of polling. |
Technical notes
A property value that is zero or negative is rejected with invalid_input and is not billed, because combined loan-to-value is undefined when the denominator is not positive.
What combined loan-to-value adds that first-lien LTV leaves out
The identity this calculator uses is cltv_percent equals the sum of the loan balances divided by property_value, times one hundred. A CLTV above one hundred percent means the combined liens exceed the appraisal — the owner is underwater on a combined basis — and this endpoint reports that honestly instead of clamping the percentage at one hundred.
Input contract, response shape, and error behaviour
A negative loan balance is also rejected: an outstanding principal cannot be less than zero. Example: a four-hundred-thousand appraisal with a two-hundred-eighty-thousand first mortgage and a forty-thousand HELOC yields first-lien LTV of seventy and CLTV of eighty, with equity of eighty thousand. POST a JSON body with two required fields. property_value is the appraised value of the collateral in one currency unit; aliases appraised_value, appraisal, market_value, and value map to the same field so a loan-origination worksheet can keep its column names. loans is a non-empty array of objects, each with a non-negative outstanding balance and an optional name; aliases liens, loan_balances, and balances are accepted. Each numeric field may arrive as a JSON number or a numeric string. Missing fields, empty strings, empty arrays, and non-finite values fail with invalid_input naming the field. On success the body echoes property_value, total_loan_balance, and loan_count, then reports ltv_percent from the first row, cltv_percent from every row, cltv_ratio as a decimal, remaining equity and equity_percent, over_100 when combined liens exceed the appraisal, a per-loan breakdown with share_percent, and a formula string restating the identity. Pair the JSON with your own product box for which CLTV ceiling applies — conventional, FHA, VA, jumbo, or HELOC — because this endpoint divides the numbers you send; it does not look up a guideline table, an appraisal, or a credit report.
Where a CLTV calculator earns its keep
HELOC desks re-run the same two fields when a draw posts or an appraisal is refreshed, then pin cltv_percent in the credit memo so every conversation starts from one combined ratio. Keep property_value strictly positive, send at least one loan row, pin the rounded percentage in tests, and you get a reproducible combined loan-to-value for credit memos, LMS plugins, and edge workers without standing up an underwriting engine of your own.
Integration use cases
HELOC draw and refinance memos
Re-price CLTV when a draw posts or a new appraisal lands: same calculator, new balances or property_value, one shared cltv_percent.
Technical questions
How is combined loan-to-value (CLTV) calculated?
cltv_percent is the sum of every outstanding loan balance secured by the property, divided by property_value, times one hundred. Eighty percent comes back as 80, not 0.80; cltv_ratio carries the decimal form. Percentages round half-up to six decimal places.
What does the CLTV calculator cost?
The browser tool is free. API requests use prepaid KIT balance at $0.002 per successful call; invalid input is not billed.