Major litigation rarely arrives with a fixed price tag. A commercial dispute, a class action, or a mass-tort defense can run for years, involve dozens of timekeepers across several firms, and generate millions of pages of documents. The cost of a major case is not a single number but a set of decisions made before the matter begins and revisited throughout it.
How firms and clients manage those costs is a discipline of its own, combining budgeting, staffing, fee design, and ongoing monitoring. What follows explains the main mechanics, drawing on court filings, bar association rules, and industry surveys. It describes how the system generally works rather than predicting any particular outcome; specific results depend on the case, the jurisdiction, and the parties involved.
Where the money actually goes in a major case
Spending in large matters generally divides into three categories:
- Professional fees – compensation for lawyer and paralegal time, usually recorded in six-minute increments and billed at hourly rates that vary by seniority.
- Hard costs, or disbursements – expenses paid to third parties such as expert witnesses, court reporters and transcripts, filing and service fees, translation, travel, and outside investigators.
- Litigation support – the technology and labor behind discovery, including data collection, processing, hosting, and document review.
In document-heavy matters, the third category can rival or exceed the first. A litigation cost survey of major companies presented to the federal judiciary found that discovery accounted for at least one-fourth of outside legal fees, and that in cases involving extensive electronic discovery the cost of searching, reviewing, and producing electronic information could average far higher per case. An empirical review published in the Duke Law Journal reached a similar conclusion from a different direction: discovery typically represents somewhere between 20 and 50 percent of total litigation costs, with wide variation depending on the matter.
Expert witnesses form a distinct line item. Their fees are often less negotiable than attorney rates, and their involvement can be staged – a damages expert may be needed at trial but not at the motion-to-dismiss stage. Whether experts are engaged throughout a matter or only during specific phases is one of the more consequential budgeting choices a case team makes.
| Cost category | Primary driver | Illustrative benchmark |
|---|---|---|
| Managed document review | Volume of documents; whether review is onsite or remote | Summer 2024 eDiscovery pricing survey: remote review at $25–$40 per hour for 49.2% of respondents; onsite review above $40 per hour for 45.9% |
| Technology-assisted review (predictive coding) | Size of the data set | Same survey: 36.1% of respondents quote under $75 per gigabyte for data sets of 250 GB or less |
| Expert witnesses | Number of experts and scope of reports and depositions | Expert fees are generally described as less negotiable than attorney rates (2024 practitioner panel) |
| Discovery overall | Scope negotiated with opposing counsel and the court | Roughly 20–50% of total litigation costs in a typical case (Duke Law Journal empirical review) |
Benchmarks are drawn from published surveys and academic reviews and are illustrative rather than predictive; pricing changes over time and varies by vendor and jurisdiction.
A budget is a plan, not a promise
A litigation budget is best understood as a written plan of what the case is expected to involve – pleadings, motions, discovery, depositions, expert work, mediation, and trial – priced by task. Because litigation depends on the conduct of opposing parties and the court, no budget can be precise. The purpose is to align expectations and provide a baseline against which actual spending can be compared.
Standard practice in complex matters is task-based budgeting, which breaks a case into phases and assigns estimated hours and costs to each. Many engagements use the Uniform Task-Based Management System codes, developed by a joint task force of law departments and law firms and endorsed by the American Bar Association and the association now known as the Association of Corporate Counsel. When invoices carry the same task codes as the budget, actual spending can be mapped directly against the plan.
The numbers behind that discipline are revealing. A 2019 survey of in-house legal departments reported that improved budget forecasting was among the top service improvements corporate clients wanted from outside firms. A 2024 industry panel reached a starker version of the same finding: a large majority of senior in-house lawyers considered accurate budgeting important, while about half said their outside counsel did not consistently provide it. That gap is why budgeting has become a negotiated, ongoing process rather than a one-time estimate.
Matching the work to the right person
Cost control is largely a staffing question. The same deposition or document set can be handled by a partner, an associate, a paralegal, or a contract attorney, at very different rates. A well-structured budget therefore specifies not only what will be done but who will do it, reserving senior time for strategy, key depositions, and trial while routing document review and routine drafting to lower-cost resources.
This is sometimes called leverage, and it is one of the few cost levers a firm can adjust without changing the scope of the case. Remote document review, in particular, has become more common and generally less expensive than onsite review, which is one reason the survey pricing above separates the two.
Fee arrangements and who carries the risk
How a firm is paid determines who absorbs the uncertainty of a case. The traditional hourly model places cost risk on the client, since more work means a larger bill. Alternative fee arrangements shift or share that risk in different ways: fixed or flat fees for discrete tasks, capped fees, blended rates across timekeepers, holdbacks tied to outcomes, success fees, and contingency arrangements in which compensation depends on a recovery.
Contingency fees are permitted in many civil matters but prohibited in some contexts, such as domestic relations and criminal cases. They are subject to the reasonableness standard in ABA Model Rule 1.5 on fees, which requires the agreement to be in writing and signed by the client and to state how the fee is calculated, which expenses are deducted from a recovery, and whether those deductions occur before or after the fee is computed. The same rule requires that the client be told in advance about expenses for which the client may be liable regardless of the outcome.
Alternative arrangements are not automatically cheaper than hourly billing. They trade predictability for flexibility, and their value depends on how well the underlying scope of work was estimated in the first place.
Advance costs, expenses, and client obligations
Many engagements require an advance payment, sometimes loosely called a retainer. Under ABA Formal Opinion 505, issued in 2023, fees paid in advance for work to be performed later generally must be held in a client trust account and withdrawn only as the work is earned, regardless of labels such as “nonrefundable” or “earned on receipt.”
Jurisdictions differ on some details, so the rules that apply depend on where the lawyer practices. Rules also govern whether a lawyer may advance litigation costs; in many jurisdictions a lawyer may do so, but the client generally remains ultimately responsible for those expenses unless an agreement provides otherwise.
Tracking spend in real time
Because a budget is only useful if someone watches it, large matters commonly use electronic billing and matter-management systems that compare budgeted and actual amounts by task, timekeeper, and phase. The more developed approaches track spending prospectively as well as retrospectively – asking firms and vendors what they expect to bill over the next few months, so that a projected overrun can be addressed before the expense is incurred rather than after.
A common control is the milestone or threshold review: when a set proportion of the budget is reached, the client and firm reassess scope, strategy, and staffing. Fee arrangements and expense practices are also a recurring subject of legal-industry coverage, and related industry reporting offers a sense of how questions about case-related spending are discussed outside the courtroom.
When a third party helps fund the case
Some commercial matters are financed by third-party litigation funding, in which an outside investor provides capital to a party or firm on a non-recourse basis – meaning the funder is repaid only if the case produces a recovery – in exchange for an interest in the proceeds. The practice is not new, but it has grown, and it has attracted regulatory attention.
Supporters describe funding as a way to widen access to the courts, particularly for smaller businesses and individuals who could not otherwise afford extended litigation. Critics raise questions about transparency and about who ultimately controls litigation decisions. Courts and legislatures have responded with disclosure rules rather than outright prohibitions in many instances. Kansas enacted a compromise disclosure law in April 2025, and a number of other states passed or considered similar measures during the same period. A 2023 Delaware judicial committee that studied the issue concluded there was no evidence of systemic problems in that state’s courts and recommended, at most, narrow inquiry into whether a funder holds control rights. Federal proposals on disclosure have been introduced but, as of 2026, no uniform national rule has been widely adopted, so requirements vary by jurisdiction and by court.
The practical takeaway for clients is that a funding arrangement is a contract with its own terms, and those terms should be reviewed alongside the fee agreement and the litigation budget.
Recovering or shifting costs
Not every dollar spent is necessarily borne by the party that pays it in the first place. Depending on the claim and the jurisdiction, insurance may cover defense or indemnity. Some statutes and contracts allow a prevailing party to recover attorney’s fees. Courts may order one side to pay certain discovery costs, though the same survey of major companies found that cost-shifting orders were relatively rare in practice. Where a recovery is obtained, the settlement or judgment may also reimburse expenses advanced during the case, subject to the terms of the fee agreement and any liens.
What tends to push a case off budget
Certain developments reliably raise cost: counterclaims that expand the dispute, discovery disputes that require court intervention, additional motion practice, delays that extend the timeline, and unanticipated parallel proceedings such as a related government investigation. Trial preparation is its own category, because the work tends to expand to fill the time available before trial, and a late extension can add significantly to the cost of the trial phase.
Experienced case teams plan for these possibilities by budgeting ranges rather than single figures, defining the assumptions behind each estimate, and building in periodic reassessment so that changes are discussed while there is still room to respond.
Why the process matters more than any single number
No method can make a major case fully predictable. Opposing counsel, the court, and unforeseen events all influence what a matter ultimately costs. What structured cost management provides is something more modest but more durable: a shared understanding between firm and client about what the work involves, who is doing it, how it will be paid for, and when to revisit the plan.
That shared understanding is what allows a client to make informed decisions at each stage – whether to litigate or settle, to expand or narrow discovery, to staff up for trial or pursue resolution – and it is what turns a budget from a number into a working tool.
Frequently asked questions
How is a litigation budget usually structured?
Most complex-case budgets are organized by phase – pleadings, discovery, dispositive motions, expert work, mediation, trial – and further broken down by task and timekeeper. Many use standard task-based codes so that invoices can be compared directly with the plan.
Are alternative fee arrangements cheaper than hourly billing?
Not necessarily. Fixed, capped, and contingency arrangements can improve predictability and allocate risk differently, but their cost depends on how accurately the scope of work was estimated. They are tools for managing risk as much as for reducing cost.
Who pays for expert witnesses and discovery vendors?
These are typically paid by the client, either directly or as reimbursed disbursements, unless a specific fee or funding arrangement provides otherwise. Some jurisdictions allow a lawyer to advance these costs, but the client’s ultimate responsibility depends on the agreement and local ethics rules.
What is third-party litigation funding?
It is an arrangement in which an outside investor provides capital for a case on a non-recourse basis, meaning repayment depends on a recovery. Disclosure requirements vary widely by jurisdiction and court, and several states have adopted new rules in recent years.
Can litigation costs be recovered from the other side?
Sometimes. Recovery depends on the applicable statute, contract, or court rule, and on the outcome of the case. Fee-shifting and cost-shifting are both possible in certain circumstances but are not automatic, and courts have discretion in many situations.
