Sarah Parker
If you've ever looked at an estimate and wondered how the insurer got from the full repair cost to a much smaller first check, the answer is almost always depreciation. It's one of the most common sources of confusion on a property claim, and one of the most common reasons a payment gets questioned.
This post walks through the basics, shows the math and methods on a simple example, and introduces a tool Claim Cohort members can use to learn and practice.
What ACV and RCV mean
Replacement cost value (RCV) is the full cost to repair or replace something today. If a 10-year-old roof is damaged, RCV is what a new roof of similar quality costs now, including material and labor.
Actual cash value (ACV) is what that damaged property was worth just before the loss. The most common formula is:
ACV = RCV − depreciation
Many homeowners and commercial policies pay ACV first. On a replacement cost policy, the policyholder can usually recover the depreciation that was held back (called recoverable depreciation) after the repair or replacement is done. On an ACV-only policy, that held-back amount generally isn't paid at all. That's why getting depreciation right matters so much: it can decide how much money is available to start the repair.
A simple example
Here's the most common method, called age/life or straight-line depreciation:
Replacement cost (RCV): $20,000 for a new roof
Age of the roof: 10 years
Life expectancy: 25 years
Depreciation percentage: 10 ÷ 25 = 40%
Depreciation amount: $20,000 × 40% = $8,000
Actual cash value: $20,000 − $8,000 = $12,000
So the first payment would be based on $12,000, not $20,000. On a replacement cost policy, the $8,000 is usually recoverable once the roof is replaced.
That looks simple, but each number in it can be questioned:
Where did the 25-year life expectancy come from?
Was the roof in better or worse condition than its age suggests?
Should labor be depreciated, or only materials?
What about removal of the old roof, sales tax, or overhead and profit (O&P)?
The answers depend on the policy and on the state. Some states, including Washington and California, don't allow labor to be depreciated. Courts in other states have gone both ways. That's exactly why it helps to see the math laid out and understand where each number comes from.
Meet the ACV and Depreciation Calculator
We built the Claim Cohort ACV and Depreciation Calculator so you can learn how this works by doing it. Change a number and watch every step of the math update.
Here's what's inside:
Building and contents modes. Work on a building repair (homeowners Coverage A or B, or a commercial or BOP building) or a personal property item (homeowners Coverage C, or commercial or BOP business personal property).
Six depreciation methods: age/life (straight-line), effective age, guide schedule, declining balance, flat percentage, and market value (broad evidence). Each one comes with a plain-language explanation of how it works and when it's used.
Choices for what gets depreciated. Turn depreciation on or off for labor, removal, sales tax and O&P, with notes on how states handle each one.
Every step of the math, shown. No black box. You see exactly how the tool got from RCV to ACV.
Ready-to-copy notes. The tool writes an example Xactimate F9 note and a report paragraph you can adapt for your own estimates and reports.
An AI prompt tab, with a clear warning to check every number and fact an AI tool gives you. The calculator itself doesn't use AI. It's plain math, so the results are consistent.
Help buttons on every field and a key terms guide, so you're never stuck on a word you don't know.
A sample list of laws, cases and sources, with a short explainer on the difference between case law, regulations and common industry practice.
Who it's for
The calculator is rated Intermediate. It's most useful if you already know the basic terms (RCV, ACV and depreciation), and it's built to be friendly to people who are still learning them. It's a good fit for:
New public adjusters and people studying for a license
Independent adjusters and estimators who want to check their understanding
Contractors and restoration pros who work with insurance estimates
Anyone preparing a proof of loss that needs ACV and depreciation figures
New to these terms? Start with the 5-minute video tour below, then open the key terms guide at the top of the tool.
Watch the 5-minute tour
Claim Cohort founder Sarah Parker walks through each part of the calculator:
A learning tool, not a final answer
This calculator is for education. It isn't legal, financial or claims-handling advice. ACV and depreciation rules depend on the policy wording and the law in the state where the property is, and they change over time. Before you use any figure on a real claim, check it against the policy, your estimating software and the law in that state.
Get access
The ACV and Depreciation Calculator is in the Claim Cohort Library and it's open to every member, including our free Nonprofit members, General members and Professional members.
Claim Cohort is an online education platform and professional community for people who work on property insurance claims. Members get structured courses, live sessions, regional regulatory updates, a template library and a private community of claims professionals.
