Legal Dictionary


Legal Definition of subrogation


  1. When you pay off someone's debt and then try to get the money from the debtor yourself.

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Definition of subrogation


subrogation (countable and uncountable; plural subrogations)

  1. (law) The substitution of a different person in place of a creditor.

Further reading

Subrogation in its most common usage refers to circumstances in which an insurance company tries to recoup expenses for a claim it paid out when another party should have been responsible for paying at least a portion of that claim.

More specifically, subrogation is the legal technique under common law by which one party, commonly an insurer (I-X) of another party (X), steps into X's shoes, so as to have the benefit of X's rights and remedies against a third party such as a defendant (D). Subrogation is similar in effect to assignment, but unlike assignment, subrogation can occur without any agreement between I-X and X to transfer X's rights. Subrogation most commonly arises in relation to policies of insurance, but the legal technique is of more general application. Using the designations above, I-X (the party seeking to enforce the rights of another) is called the subrogee. X (the party whose rights the subrogee is enforcing) is called the subrogor.

In each case, because I-X pays money to X which otherwise D would have had to pay, the law permits I-X to enforce X's rights against D to recover some or all of what I-X has paid out. A very simple (and common) example of subrogation would be as follows:

  1. D drives a car negligently and damages X's car as a result.
  2. X, the insured party, has Collision insurance, and claims (i.e., asks for payment) under his policy against I-X, his insurer.
  3. I-X pays in full to have X's car repaired.
  4. I-X then sues D for negligence to recoup some or all of the sums paid out to X.
  5. I-X receives the full amount of any amounts recovered in the action against D up to the amount to which I-X indemnified X. X retains none of the proceeds of the action against D except to the extent that they exceed the amount that I-X paid to X.

If X were paid in full by I-X and still had a claim in full against D, then X could recover "twice" for the same loss. The basis of the law of subrogation is that when I-X agrees to indemnify X against a certain loss, then X "shall be fully indemnified, but never more than fully indemnified ... if ever a proposition was brought forward which is at variance with it, that is to say, which will prevent [X] from obtaining a full indemnity, or which will give to [X] more than a full indemnity, that proposition must certainly be wrong."

I-X will normally (but not always) have to bring the claim in the name of X. Accordingly, in situations where subrogation rights are likely to arise within the scope of a contract (i.e. in an indemnity insurance policy) it is quite common for the contract to provide that X, as subrogor, will provide all necessary cooperation to I-X in bringing the claim.

Subrogation rights can also come into play when X brings the action against D. To the extent that X's recovery against D reflects damages incurred by X that were already covered by I-X, I-X will have a lien on the proceeds of the action. In the collision example above, it would be typical for X to sue D, asserting as one element of damage the cost of repairing X's car. I-X's lien would extend to whatever D paid X that was allocable to that claim, but not to what was allocable to X's other claims against D, such as lost wages or pain and suffering.

Subrogation is an equitable remedy and is subject to all the usual limitations that apply to equitable remedies.

Although the basic concept is relatively straightforward, subrogation is considered to be a highly technical area of the law.

Types of subrogation

Although the classes of subrogation rights are not fixed (or closed), types of subrogation are normally divided into the following categories:

  1. Indemnity insurer's subrogation rights
  2. Surety's subrogation rights
  3. Subrogation rights of business creditors
  4. Lender's subrogation rights
  5. Banker's subrogation rights

Although the various fields have the same conceptual underpinnings, there are subtle distinctions between them in relation to the application of the law of subrogation.

Indemnity insurer's subrogation rights

With insurance subrogation, there are three parties involved: the insured; the insurer; and the tortfeasor (the party who is responsible for the damages). Under subrogation, the insurance company assumes the right to sue the tortfeasor for the amount of the damages reimbursed to the insured. An indemnity insurer has two distinct types of subrogation rights. Firstly, they have the classic type of subrogation used in the example above; viz. the insurer is entitled to take over the remedies of the insured against another party in order to recover the sums paid out by the insurer to the insured and by which the insured would otherwise be overcompensated. Secondly, the insurer is entitled to recover from the insured up to the amount which the insurer has paid to the insured and by which the insured is overcompensated. The latter situation might arise if, for example, an insured claimed in full under the policy, but then started proceedings anyhow against the tortfeasor, and recovered substantial damages.

Surety's subrogation rights

A surety who pays off the debts of another party is subrogated to the creditor's former claims and remedies against the debtor to recover the sum paid. This would include the endorser on a bill of exchange.

In relation to a surety's subrogation rights, the surety will also have the benefit of any security interest in favour of the creditor for the original debt. Conceptually this is an important point, as the subrogee will take the subrogor's security rights by operation of law, even if the subrogee had been unaware of them. Accordingly, in this area of the law at least, it is conceptually improbable that the right of subrogation is based upon any implied term.

Subrogation rights against trustees

A trustee of a trust who enters into transactions for the benefit of the beneficiaries of the trust is generally entitled to be indemnified by the beneficiaries for personal loss incurred, and has lien over the trust assets to secure compensation. If, for example, the trustee conducts business on behalf of the trust and fails to pay creditors, then the creditors are entitled to be subrogated to the personal and proprietary remedies of the trustee against the beneficiaries and the trust fund. Where under the terms of the trust instrument the trustees are permitted to trade in derivatives as part of the trust's investment strategy, then the derivatives document will also normally contain a subrogation clause to bolster the common law rights.

Lender's subrogation rights

Where a lender lends money to a borrower to discharge the borrower's debt to a third party (or which the lender pays directly to the third party to discharge the debt), the lender is subrogated to the third party's former remedies against the borrower to the extent of the debt discharged.

However, if the original loan was invalid (because, for example, it was ultra vires the borrower) then the lender generally cannot enforce the third party's claim against the borrower as this would indirectly validate an invalid loan. Nonetheless the claim can subsist insofar as the unlawfully borrowed money was used to discharge lawful debts, by inferring the legality of the use of the funds to the right of subrogation. The law in this area has been subject to conflicting decisions.

Banker's subrogation rights

Where a bank, acting on what it believes erroneously to be the valid mandate of its client, pays money to a third party which discharges the customer's liability to the third party, the bank is subrogated to the third party's former remedies against the customer.


  1. Wiktionary. Published under the Creative Commons Attribution/Share-Alike License.


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