Written by attorneys · grounded in primary & secondary sources — see below
An adverbial phrase indicating that a rate, amount, or obligation is measured or accrues by or for each year.
Sources & Authorities· 13 primary sources
Select any source to read its text and confirm it supports the definition.
Statutes
Federal Rules
Uniform Acts
How it applies
Common Examples
6
Lawyer Tracks Annual Pro Bono Hours
Phoebe Park aspires to meet the professional responsibility goal by devoting time each year to eviction defense for low-income tenants. She logs her uncompensated work at fifty hours per annum to satisfy the aspirational standard. The firm records the hours as qualifying service without fee.
Executive Order Seizes Steel Mills
The President issues an order directing federal seizure of steel production facilities during a labor dispute. Owners of Youngstown Sheet & Tube challenge the action as exceeding executive power. The dispute centers on annual production capacity measured per annum.
Youngstown Sheet & Tube Co. v. Sawyer343 U.S. 579 (1952)
State Regulates Gas Station Rents
Chevron challenges a Hawaii statute capping rent increases on dealer leases. The law limits annual rent adjustments to a fixed percentage per annum. The Court examines whether the cap effects a taking under the Fifth Amendment.
Lingle, et al. v. Chevron U.S.A. Inc.544 U.S. 528, 537 (2005)
Proxy Statement Omits Merger Details
TSC Industries shareholders sue over a proxy statement that fails to disclose material facts about a proposed merger. The omitted information would have affected the annual dividend projections per annum. The Court defines the standard for materiality in disclosure.
TSC Industries, Inc. v. Northway, Inc.426 U.S. 438, 449, 96 S. Ct. 2126, 48 L. Ed. 2d 757 (1976)
Class Action Seeks Interest on Royalties
Phillips Petroleum withholds royalty payments from out-of-state lessors in a gas lease dispute. The class seeks recovery of interest calculated at six percent per annum on the withheld amounts. The Court addresses personal jurisdiction over absent class members.
Phillips Petroleum Co. v. Shutts472 U.S. 797 (USSC 1985)
Standing Challenge to Zoning Ordinance
Residents sue town officials over a zoning decision that allegedly reduces property values. The complaint alleges annual tax assessments will rise by several thousand dollars per annum. The Court requires plaintiffs to show particularized injury for standing.
Common questions
Frequently Asked
3
What does per annum mean in legal instruments?+
It means that a rate or obligation is measured or accrues by or for each year. Courts and statutes routinely use the phrase to express annual interest, rent adjustments, or service hours.
Supporting sources
How is per annum applied to interest calculations?+
It fixes the annual rate at which interest accrues on a principal sum. Mortgage notes and judgments commonly state interest at a stated percentage per annum, with compounding or payment terms specified separately.
Does per annum appear in professional responsibility rules?+
The Model Rules use the synonymous phrase per year when stating the aspirational goal of fifty hours of pro bono service. The underlying concept is the same annual measurement.
438 U.S. 104, 98 S.Ct. 2646, 57 L.Ed.2d 631 (1978)Property
…building cantilevered above the Terminal building. During the period of construction, UGP would pay Penn Central $1 million per year. Upon completion, UGP would rent the building for 50 years, with an option for another 25 years, at a guaranteed minimum rental of $3 million per year. The record is clear that the…