Economic Damages Calculator
Estimate past losses and the present value of future medical care, lost earning capacity, household services, and other measurable financial costs.
What this calculator does
Economic damages are the dollars a plaintiff or family can point to, document, and explain with bills, wage records, care plans, employment history, or replacement-cost evidence. In personal injury and wrongful death work, that often means adding what has already been lost and then valuing what is reasonably expected to be lost in the future. This calculator is built for that narrower job. It does not try to price every part of a lawsuit. Instead, it focuses on the financial side of the claim: past medical expenses, past lost wages, other past out-of-pocket losses, future medical or care costs, future lost earning capacity, household services, and one-time future costs such as equipment or home modifications.
That distinction matters because the math for economic damages is usually more structured than the math for non-economic damages. A medical bill from last year is a past loss and can usually be counted at face value if it belongs in the claim. A future care plan, by contrast, is a stream of expected annual costs that may grow over time and may need to be discounted back to present value. If you mix those two concepts together, the result becomes hard to defend. This page therefore separates past losses from future losses and shows both nominal totals and present-value totals so you can see exactly where the estimate comes from.
The calculator is especially useful when you need a fast, transparent starting estimate before building a fuller damages model. Lawyers can use it to test assumptions before a demand package. Claims professionals can use it to compare scenarios. Families and injured individuals can use it to understand why a long-term care case may look much larger in nominal dollars than in present value, or why a short period of lost work may matter less than a long reduction in earning capacity. It is a planning aid, not legal advice, but it helps turn a complicated damages discussion into a set of numbers you can inspect.
What belongs in each field
The first three fields cover past losses. Past medical expenses are the bills or paid amounts already incurred for treatment, therapy, medication, hospitalization, transportation for care, or related documented medical needs, depending on how you are framing the claim. Past lost wages or income are earnings already missed because the injured person could not work or had to reduce hours. Other past out-of-pocket costs are the practical dollars that do not fit neatly into those first two buckets, such as travel, temporary home help, damaged assistive items, or replacement expenses already paid.
The next three recurring fields cover future annual losses. Future medical or care costs represent the expected yearly cost of ongoing treatment, attendant care, therapy, medication, rehabilitation, or similar support. Future earning capacity loss is not always the same as past lost wages; it is the expected annual reduction in the injured person’s ability to earn going forward. Household services replacement value is the yearly value of chores, childcare, transportation help, meal preparation, maintenance, or other services the person can no longer provide and now must replace or that the family loses in practical economic terms.
The remaining inputs control time and valuation. Duration of future losses is the number of years those annual losses are expected to continue. Growth / cost increase rate reflects the idea that future care costs or earnings losses may rise each year instead of staying flat. Discount rate converts future dollars into present dollars. The final field, One-time future costs, is for expenses that are expected later but are entered as a single amount in today’s estimate. In this calculator’s math, that one-time future amount is treated as immediate for simplicity, so its present value equals its nominal amount. If you need that figure discounted from a specific future year, you would want a more customized model.
How the future-loss math works
The structure of this calculator is straightforward. Past losses are added directly because they are already incurred. Future losses are modeled as annual streams that may grow each year, and then each stream is discounted to present value. The tool also reports the undiscounted nominal total, which answers a different question: how many total dollars would be paid over time if you simply added the future stream without discounting it.
At the highest level, the estimate can be thought of as past losses plus the present value of each future component plus one-time future costs:
For each recurring future stream, the calculator uses the present value of a growing annuity. In plain language, it starts with the annual amount you enter today, allows that amount to grow by the growth rate each year, and then discounts each future payment by the discount rate:
In that formula, A is the starting annual amount, g is the annual growth rate, r is the discount rate, and n is the number of years. The nominal, undiscounted total for the same growing stream is:
If growth is zero, the nominal total simplifies to annual amount times years. If the discount rate equals the growth rate, the present-value formula also has a special simplified form. The script already handles those edge cases so you do not have to enter workaround values.
The general mathematical ideas behind the page are also shown below and are preserved here because they describe the calculator in a broader modeling sense. First, the result is a function of several inputs:
Second, many damages models can be viewed as a weighted sum of components, especially when different categories contribute differently to the total:
Those two expressions are more abstract than the present-value formulas above, but they help explain why a damages estimate changes when one component changes. A big annual earning-capacity loss over many years will often move the result more than a small one-time expense. A higher discount rate will generally reduce present value. A higher growth rate will generally increase both nominal totals and, depending on the discount rate, present value as well.
Worked example
Suppose a case involves $45,000 in past medical expenses, $30,000 in past lost wages, and $5,000 in other past out-of-pocket costs. That produces $80,000 in total past losses. Now assume future medical or care costs of $12,000 per year, future earning-capacity loss of $25,000 per year, household services replacement value of $6,000 per year, a duration of 20 years, a growth rate of 2%, a discount rate of 4%, and $18,000 in one-time future costs for equipment or home modification. Those values are not universal; they simply make the calculation concrete.
Under those assumptions, the recurring future streams have a much larger undiscounted total than present value because the money is spread over time. The approximate present value of future medical costs is about $194,000. The approximate present value of future earning-capacity loss is about $404,000. The approximate present value of household services is about $97,000. Adding those present values to the $80,000 in past losses and the $18,000 one-time future cost produces a total present-value estimate of roughly $793,000. The corresponding nominal total is much higher, around $1.14 million, because it counts all future dollars without discounting them.
This example highlights a common misunderstanding. People sometimes see a present-value figure and assume it is understating the loss, when in reality it is answering a different valuation question. The nominal total tells you the raw future dollars that may be spent or lost over time. The present-value total tells you what those future dollars are worth in today’s dollars under the rate assumptions used. In litigation or settlement analysis, that difference can be central.
How sensitive is the result to the discount rate?
Long-term economic damages estimates are often highly sensitive to the relationship between growth and discount. Using the worked example above and changing only the discount rate gives a quick sense of the range:
| Discount rate | Approximate total present value | What it shows |
|---|---|---|
| 3% | About $859,000 | A lower discount rate makes future losses worth more in today’s dollars. |
| 4% | About $793,000 | This is the baseline example used above. |
| 5% | About $731,000 | A higher discount rate pushes the present value downward. |
That does not mean one rate is automatically correct. It means the rate assumption deserves careful thought, especially in claims involving many future years. The best practice is usually to run at least a conservative case, a baseline case, and a more aggressive case so everyone can see which assumptions are doing the work.
How to interpret the result on this page
When you click calculate, the highlighted result gives the total economic damages in present value. That is the main headline number. The table beneath it then breaks the estimate into components so you can see how much came from past losses, future medical or care, future earnings loss, household services, and one-time future costs. Each row shows both the nominal total and the present value, which is useful because it prevents the future-loss math from disappearing into a single opaque number.
If the result feels too high or too low, work backward from the components. A surprisingly large total is often caused by an annual future input that was meant to be monthly, by too many future years, or by a growth rate that is higher than intended. A surprisingly small total is often caused by entering a partial annual amount, forgetting a category such as household services, or using a discount rate that is much higher than the growth rate. The component table makes those mistakes easier to spot than a single total ever could.
You should also notice what happens when future duration is zero. In that case, all recurring future streams disappear, and the estimate becomes past losses plus any one-time future cost. That behavior is intentional and makes the calculator useful for short-term cases as well as long-term care scenarios. Likewise, if a recurring future amount is zero, that category contributes nothing. The page is designed to be simple enough for quick scenario testing without hiding the underlying logic.
What this calculator does not include
This tool estimates economic damages only. It does not calculate pain and suffering, emotional distress, loss of consortium, punitive damages, liability apportionment, comparative fault reductions, prejudgment interest, tax effects, attorney fees, or jurisdiction-specific caps. It also does not decide whether an amount is legally recoverable. Those are legal and factual questions that depend on evidence, local law, expert testimony, and the way the claim is presented. The calculator is therefore best understood as a structured worksheet for measurable financial losses rather than a complete settlement engine.
It also assumes annual future payments occur at the end of each year, which is standard for many simplified present-value models but may not perfectly reflect monthly or irregular payments. If you need monthly discounting, different growth rates for different categories, a delayed start to future losses, survival probabilities, work-life expectancy adjustments, fringe benefits, or separate medical inflation assumptions, then a custom spreadsheet or expert economic report is more appropriate. Even so, the calculator remains valuable because it gives you a clean baseline to discuss before you add complexity.
Practical assumptions and careful use
The strongest use of this page is comparative rather than absolute. Enter one set of assumptions, review the result, then vary one major assumption at a time. If the number changes sharply when you alter years, growth, or discount, you have learned something important about the case. If the number barely moves when you change a field you expected to matter, that is also useful because it tells you where the claim is and is not sensitive. Transparent estimates are easier to negotiate, easier to explain to a client, and easier to refine with expert input.
For that reason, it is wise to save or note the assumptions behind any figure you plan to share. Economic damages discussions go wrong when people compare totals that are based on different durations, inconsistent annual amounts, or a mismatch between growth and discount assumptions. A calculator cannot solve those judgment calls for you, but it can make them visible. Use the page as a disciplined starting point, then confirm the final numbers with the records, experts, and legal standards that apply to your matter.