Does the Word Salary Come From Salt? Yes, but Roman Soldiers Weren't Paid in It
Salary comes from the Latin salarium, derived from sal, salt. But the story that Roman soldiers were paid in salt appears in no ancient text: it grew out of 18th- and 19th-century dictionaries.
Yes, the word salary comes from the Latin salarium, which is derived from sal, "salt." What lacks evidence is the popular story that Roman soldiers were paid in salt or given money to buy it. No ancient text says so, and Merriam-Webster states that the exact link between salt and official pay in Rome is unknown.
This is a case where the etymology is right and the anecdote that travels with it isn't. It helps to separate the two: what reference dictionaries document about the word, and what was added much later, centuries after the Romans, through a hasty reading of a single ancient author.
What do dictionaries say about salarium?
In Latin, salarium was the official pay given to someone holding a civil or military post. The word comes from the adjective salarius, "of or relating to salt," built from sal plus the suffix -arius. From that Latin came the English salary, recorded since the 13th century according to Merriam-Webster, along with the French salaire, the Spanish salario and the Portuguese salário. English later added salaried, around 1600, first used in contrast with "honorary," meaning unpaid, and Japanese even borrowed the English word for sarariman, the salaried office worker.
So far, everyone agrees. The disagreement starts when people try to explain why a salt word came to mean pay. The Online Etymology Dictionary, a widely used reference, says salarium may have meant a soldier's allowance for buying salt. Merriam-Webster is more cautious and says that explanation has no basis in ancient sources.
Where did the "paid in salt" story come from?
The ancient text most often cited is Pliny the Elder's Natural History, from the first century. Writing about salt, Pliny says it is connected with public offices and military service, "and that's where we get the word salaries." He ties salt to the word, but he doesn't say anyone was paid with it, and he doesn't explain the connection.
According to New Zealand classicist Peter Gainsford, the phrase "salt money" (salarium argentum) appears in no Roman author. It shows up in 18th- and 19th-century Latin dictionaries, starting with Facciolati and Forcellini's lexicon of 1771, which inferred it by analogy with words like calcearium, "shoe money." The more colorful version, soldiers paid in actual salt, appears in print around the 1860s.
So what was the connection between salt and salary?
The honest answer is that nobody knows for sure. Merriam-Webster concludes that salt was somehow associated with official pay in early imperial Rome, but its exact role is unknown. These are the explanations in circulation:
- An allowance to buy salt: the most repeated explanation, and a plausible one, but it appears in no ancient source.
- A figurative sense: Gainsford thinks it more likely the word began as something like "money for everything else," with no literal link to the seasoning.
- Payment in salt itself: there is no evidence for it at all, and the scholars cited in this article consider it false.
- The Via Salaria: Rome's "salt road" was named for carrying salt, but that doesn't explain the word salary.
Was salt really that valuable in Rome?
Important, yes; rare, no. Salt preserved food and was controlled by the state, but it wasn't worth its weight in gold. Gainsford runs the numbers using two ancient writers: the historian Livy records the price of salt in Rome in 204 BC, and the Greek historian Polybius gives a foot soldier's daily pay. By their figures, a Roman pound of salt, about 330 grams (roughly 12 ounces), cost around one-twentieth of a soldier's daily wage.
In other words, nobody needed a whole paycheck just to keep the family in salt. Nor is the planet short of it, as anyone who has wondered why the ocean is salty knows.
What about "worth your salt" and "salt of the earth"?
Other salt sayings often get pinned on the Romans for no reason. "Salt of the earth," for a good and essential person, is biblical: it comes from the Gospel of Matthew (5:13). "Worth his salt," meaning someone who earns their pay, is first recorded only in the 1830s, Gainsford notes. And the idea that enslaved people were bought with salt is fiction too.
None of this changes the central fact: today's salary really does carry salt in its name. The full story is just more modest than the legend, and a reminder that payment has always changed shape, from goods to coins, as the origin of money shows.
