How to translate marketing copy into Spanish properly
Produce Spanish marketing copy that sounds like speech rather than a government notice, and judge whether your audience needs it at all.
Why the Spanish version reads like a government letter
The English page is warm and direct. The Spanish version of it reads like a notice from a state agency. Nothing in it is wrong. Every word is correct Spanish and no customer speaks that way.
This happens because translation tools and formally trained translators both reach for the highest formal register available. Buyers read and speak an everyday Spanish with English words folded in. Copy that refuses those words sounds official rather than friendly and official is the wrong tone for selling almost anything.
What translation excludes and what it costs
Translation does not include layout repair. Spanish sets longer than English for the same meaning so buttons overflow, headlines wrap and ad headlines exceed their character limits. Budget design time to fix that. It also does not include Spanish keyword research. Search behaviour in Spanish follows its own queries and its own spellings and that is separate work from rendering your English page.
Costs sit in three places. The translator or transcreator charges by word or by piece. A native reviewer from the audience you are targeting should read everything before it goes live. Then there is a rendered page check because errors appear in the browser that were invisible in the document. Accented characters are the usual casualty so confirm the brand typeface carries the full character set and that the licence covers web and advertising use.
Who should not translate into Spanish
A business selling to procurement teams and IT departments should not. Those buyers work in English all day and a Spanish microsite adds a second set of pages to maintain with no lift in enquiries. The same goes for brands whose positioning is deliberately English coded at the premium end of a category.
Do not translate if you cannot answer in Spanish. A Spanish advertisement that produces a Spanish phone call nobody on the sales floor can handle comfortably is worse than no advertisement. Fix the staffing before the copy. There is also a mapping error worth naming early. Spanish is not one register and not one vocabulary. Copy written for a Mexican American audience in the south west can read wrong to a Puerto Rican or Cuban American audience on the east coast, and a word that is neutral for one can be odd or worse for another. Decide which audience you are actually writing for before the brief goes out.
How to get copy that sounds like speech
Transcreate rather than translate. Give the writer the intent behind each line instead of only the line. A headline built on an English pun has no Spanish equivalent and needs a fresh idea that lands the same promise. Decide the register before anybody starts and write it into the brief. Everyday spoken Spanish for consumer offers and a more formal register for financial or institutional material.
Keep the English loanwords that people actually use. Words such as email and online and delivery are part of how many customers speak and replacing them with formal coinages is what creates the notice board effect. Choose a form of address and hold it everywhere, because switching between the formal and the familiar second person mid page reads as careless. Maintain a short glossary of brand terms that must never change. Then have a native speaker from the target audience read the live page aloud. Anything they stumble over gets rewritten.
Judging whether it worked
Word count delivered flatters and so does engagement on Spanish social posts. Likes arrive from people who appreciate the gesture rather than from buyers. Neither number tells you whether the copy sells.
Compare conversion rate on the same offer across the two languages with traffic source held constant. If Spanish traffic converts worse than English traffic from a similar audience the copy is the suspect rather than the language. The other signal is qualitative. Ask three existing customers in the target audience to read it and tell you what the offer is. If they hesitate the register is wrong.
The mistake that embarrasses the brand in public
The common error is running English copy through a machine tool and publishing it without a native reader. The grammar usually survives. What fails is idiom and tone. Imperative calls to action come out blunt or oddly intimate and figurative lines turn literal and occasionally comic.
This is expensive because the damage lands on exactly the audience you were trying to respect. A customer who sees clumsy Spanish concludes the business treats their market as an afterthought. It is also public and screenshots circulate. A review pass by one native speaker costs very little against the cost of looking careless.
Plan for the maintenance
Every edit to the English creates a debt in the Spanish. The two pages drift apart within a quarter and the Spanish version ends up advertising last season's price. Decide upfront which pages are translated and keep that set small enough to update in the same week as the English.
This guide explains how something works. It is not legal, tax or financial advice, and rules change. Confirm anything regulatory with a qualified professional before you act on it.