Foregone income is the money a person or business would have earned if another party’s wrongful conduct hadn’t gotten in the way. In a personal injury or wrongful death case it shows up as lost wages and lost earning capacity; in a broken contract case it shows up as lost profits. Courts treat it as a core piece of compensatory damages, and the number is usually built by a forensic economist, tested by opposing experts, and constrained by a set of legal rules that decide how much of it a jury is actually allowed to award.
Lost Wages and Lost Earning Capacity Are Not the Same Thing
In an injury case, foregone income splits into two pieces, and confusing them is one of the most common mistakes plaintiffs make.
Lost wages look backward. They’re the specific paychecks you missed between the injury and the trial date, proven with pay stubs, tax returns, and employer records. Because they’re concrete, courts typically require them to be proven to a reasonable certainty with documented evidence.
Lost earning capacity looks forward. It measures the reduction in your ability to earn money over your remaining working life, whether or not you were employed when you were hurt. A stay-at-home parent, a recent graduate, or someone between jobs can still claim it. Many courts treat lost earning capacity as general damages rather than special damages, which gives juries more room to set the number.
Both fall under foregone income. The evidence each requires, and the flexibility courts allow, do not.
Total compensation also runs well past salary. Employer-sponsored health insurance, pension contributions, 401(k) matching, and stock options often represent 20 to 40 percent of a worker’s pay package, and when those disappear their replacement cost or projected growth becomes part of the claim. An economist valuing a lost 401(k) match calculates what those contributions would have grown to by retirement age, not just the annual dollar figure.
When the Plaintiff Is Self-Employed
Proof gets harder without a W-2. Self-employed people, freelancers, and small business owners have to build their earning capacity out of business records: tax returns (particularly Schedule C), profit-and-loss statements, invoices, bank records, and client contracts. A plaintiff’s own testimony about what they would have earned, standing alone, isn’t enough.
The harder question is isolating the owner’s personal contribution. If a landscaping company nets $300,000 a year but runs a crew of five, the owner’s foregone income isn’t the full $300,000. Courts look at how much of that profit came from the owner’s own labor, skills, and management, rather than from capital or other employees’ work. Seasonal patterns complicate things further, and pre-injury growth trends, new contracts, or expansion plans matter because they support a claim that future earnings would have exceeded the past average.
Household Services Count Too
Foregone income isn’t limited to what appears on a paycheck. Most jurisdictions allow recovery for the value of lost household services when an injury or death stops someone from doing unpaid domestic work: cooking, cleaning, childcare, home maintenance, yard work. This matters most for non-working spouses, retirees, and primary caregivers, whose wage histories may be thin but whose economic contribution to a household is not.
Economists typically use the replacement cost method, pricing out what it would take to hire someone to do each task. The U.S. Census Bureau’s American Time Use Survey supplies average hours by gender, marital status, employment status, and number of children, and those hours are multiplied by comparable wage data from the Bureau of Labor Statistics.
Lost Profits in Contract Disputes
When a business sues over a broken contract, foregone income takes the form of lost profits, and the legal framework is stricter than in personal injury cases. Two hurdles trip up more claims than any others: foreseeability and reasonable certainty.
Foreseeability means lost profits are recoverable only if both parties could reasonably have anticipated those losses when they signed the contract. If a supplier’s late delivery costs a manufacturer a major client, the manufacturer recovers only if the supplier knew or should have known the delivery was tied to that relationship. Losses nobody could have seen coming stay off the table, no matter how real they turned out to be.
Reasonable certainty means the plaintiff has to prove the number with enough rigor that the jury isn’t guessing. Historical revenue, industry benchmarks, signed contracts, purchase orders, comparable business performance. A retail store forced to close for three months after property damage can point to the same quarter’s sales in prior years. A tech startup with no revenue history has a much steeper climb, and while most jurisdictions no longer apply a blanket bar against new-business lost profit claims, proving foregone income without historical data remains difficult in practice.
How Economists Build the Number
The math is where most of the courtroom fight happens. Forensic economists project what the plaintiff would have earned, then convert those future dollars into a single lump sum the jury can award today. The process has three main pieces.
First, how long the plaintiff would have kept working. Economists use work-life expectancy tables that account for age, gender, education, and labor force participation. The Bureau of Labor Statistics publishes the foundational data, and expert witnesses apply increment-decrement models that factor in the probability of entering and leaving the workforce at each age, along with the probability of death in any given year.1Bureau of Labor Statistics. Estimating Lost Future Earnings Using the New Worklife Tables The result isn’t a single retirement age but a probability-weighted projection of expected active working years.
Second, what the plaintiff would have earned in each of those years. The economist builds a growth trajectory that includes anticipated raises, promotions, and inflation, comparing the plaintiff’s history against industry and regional benchmarks.
Third, discounting those future earnings to present value. A dollar today is worth more than a dollar ten years from now, so the economist applies a discount rate reflecting what the lump sum could earn if invested. This choice can swing an award by hundreds of thousands of dollars. Some economists use a “total offset” method that assumes wage growth and investment returns roughly cancel out, producing no net discount. Others apply a net discount rate based on the difference between expected wage growth and a safe investment return. Defending those assumptions is where expert testimony earns its fees.
When a plaintiff is injured but not completely disabled, a vocational rehabilitation expert usually enters the picture to figure out what jobs the plaintiff can still perform and what those jobs pay. The gap between projected pre-injury earnings and post-injury earning capacity becomes the annual foregone income figure that the economist projects forward and discounts.
Pre-Existing Conditions and the Eggshell Plaintiff Rule
Defendants frequently argue that a plaintiff’s pre-existing health problems, not the injury at issue, explain the inability to work. The eggshell plaintiff doctrine (sometimes called the “eggshell skull rule”) shuts that argument down at the level of principle. A defendant takes the victim as they find them. If a pre-existing back condition means a rear-end collision does far worse damage than it would to a healthy person, the defendant is on the hook for the full extent of the harm.
That doesn’t produce a windfall. The defendant is liable for the aggravation of the pre-existing condition, not for the condition itself. If the plaintiff’s bad back was already limiting earning capacity before the accident, the foregone income calculation reflects only the additional loss the defendant caused. Separating baseline from new injury usually requires medical experts and economists working together, which is why documenting pre-injury work capacity and earnings matters so much.
The Plaintiff’s Duty to Mitigate
A plaintiff can’t sit at home, turn down reasonable job offers, and expect the full foregone income award. The duty to mitigate requires injured parties to take reasonable steps to reduce their losses, generally by making a good-faith effort to return to work or find employment that accommodates their limitations.
Reasonable is the key word. Courts don’t expect heroic efforts. A plaintiff isn’t required to accept a job with drastically lower pay, fewer responsibilities, or worse conditions than the pre-injury position, and doesn’t have to relocate to find work. Turning down a light-duty position a doctor has cleared, or refusing vocational rehabilitation without a good reason, can reduce the award. Any income the plaintiff earns during recovery, or could have earned through reasonable effort, is subtracted from the foregone income total.
Mitigation is an affirmative defense. The defendant carries the burden of showing comparable work was available and that the plaintiff’s refusal actually increased the losses.
The Collateral Source Rule
Payments a plaintiff receives from independent sources like health insurance, disability benefits, or an employer who kept paying wages during recovery do not reduce the defendant’s liability. The defendant still owes the full amount of provable damages regardless of what the plaintiff collected elsewhere.
The Restatement (Second) of Torts codifies this rule: payments made to the injured party from sources other than the tortfeasor are not credited against the tortfeasor’s liability, even if they cover the same harm. The reasoning is that a wrongdoer shouldn’t benefit from the plaintiff’s foresight in buying insurance or from an employer’s generosity. In many jurisdictions the rule also operates as an evidentiary bar, keeping defense attorneys from telling the jury about the plaintiff’s coverage at all.
Not every state applies the rule identically. Some have carved out exceptions for medical malpractice or allow collateral source evidence when the defense claims the plaintiff is exaggerating injuries. The baseline in most of the country, though, is that the defendant pays full freight, and any potential double recovery is worked out through subrogation between the plaintiff and the insurer after the verdict.
Expert Testimony Has to Clear Daubert
Foregone income claims live or die on expert testimony, and the other side will almost always try to keep that testimony away from the jury. In federal court and most state courts, expert opinions must clear the bar set by Daubert v. Merrell Dow Pharmaceuticals, Inc., which assigned trial judges the role of gatekeeper for expert evidence.2Justia US Supreme Court. Daubert v. Merrell Dow Pharmaceuticals, Inc.
Under Federal Rule of Evidence 702, an expert may testify only if the proponent shows it is more likely than not that the specialized knowledge will help the jury, the testimony rests on sufficient facts or data, it is the product of reliable principles and methods, and the expert reliably applied those methods to the facts.3Cornell Law Institute. Rule 702 – Testimony by Expert Witnesses Courts reviewing an economic model consider whether the methodology can be tested, its known error rate, whether it has been peer-reviewed, and whether it reflects generally accepted practices in forensic economics.2Justia US Supreme Court. Daubert v. Merrell Dow Pharmaceuticals, Inc.
A Daubert challenge typically targets the assumptions in the model: the discount rate, the wage growth projection, the assumed retirement age, or the decision to include speculative promotions. The inquiry focuses on whether the methodology is sound, not whether the conclusion is right. An expert who plugs aggressive assumptions into an otherwise valid model can still be excluded if the court finds the application unreliable.
How the Award Is Taxed
Tax treatment depends almost entirely on the underlying claim. Under Internal Revenue Code Section 104(a)(2), damages received on account of personal physical injuries or physical sickness are excluded from gross income, and the IRS has consistently held that this exclusion covers the lost wages component of a physical injury settlement.4Office of the Law Revision Counsel. 26 USC 104 – Compensation for Injuries or Sickness Settle a car accident case, and the piece of the award compensating you for wages you couldn’t earn while your leg healed is tax-free.
The picture changes sharply outside physical injury. Foregone income recovered in an employment discrimination lawsuit, a breach of contract dispute, or a defamation case is fully taxable as ordinary income.5Internal Revenue Service. Tax Implications of Settlements and Judgments Emotional distress damages are taxable unless the distress flows directly from a physical injury.4Office of the Law Revision Counsel. 26 USC 104 – Compensation for Injuries or Sickness Punitive damages are taxable regardless of the underlying claim, with a narrow exception for wrongful death cases in states where punitive damages are the only remedy available.
That distinction shows up in settlement negotiations. A plaintiff in a physical injury case who receives a $500,000 lump sum for lost wages keeps all of it. The same $500,000 in a contract dispute could shrink to $350,000 or less after federal and state income taxes. Attorneys sometimes structure agreements to allocate as much of a recovery as possible to physical-injury claims, but the IRS looks at the substance of the underlying dispute rather than the labels the parties attach, and an allocation that doesn’t match the actual claim invites an audit.