The verdict in three sentences
A multilingual B2B site in Singapore starts with an i18n setup of 3,000 to 6,000 EUR, then each extra language costs 1,500 to 3,000 EUR excluding translation. Professional translation runs 0.12 to 0.20 EUR per word and is usually the most underestimated line item. Plan +2 to 3 weeks of timeline and a multilingual maintenance retainer of 500 to 900 EUR/month to keep hreflang, sitemaps and editorial consistency healthy.
What each language costs in 2026
The cost of a multilingual site is not limited to translation: it includes technical architecture, integration and maintenance of each locale.
| Line item | 2026 range | Basis |
|---|---|---|
| i18n setup (next-intl) | 3,000 - 6,000 EUR | One-off |
| Per added language | 1,500 - 3,000 EUR | Per locale |
| Professional translation | 0.12 - 0.20 EUR/word | By volume |
| Native proofreading | 0.04 - 0.08 EUR/word | Optional |
| Hreflang + multilingual sitemap | 800 - 1,500 EUR | One-off |
| Multilingual maintenance | 500 - 900 EUR/month | Monthly |
For a 25-page site averaging 400 words, each language is about 10,000 words, so 1,200 to 2,000 EUR of translation, on top of technical integration.
Custom i18n or CMS plugin: the real trade-off
| Criterion | CMS plugin (WPML) | Custom i18n (next-intl) |
|---|---|---|
| 2026 setup cost | 800 - 2,000 EUR | 3,000 - 6,000 EUR |
| Performance | Average | High |
| Hreflang control | Automatic but rigid | Total |
| URL structure | Imposed subfolders | Custom |
| Maintenance | Plugin dependency | Independent |
| Fit for B2B export | Adequate | Ideal |
A plugin suits a simple brochure site. Custom wins for an export site demanding on performance, international SEO and per-language URL control.
Hreflang traps to avoid
A bad hreflang setup serves the wrong content to the wrong market and dilutes international SEO.
| Trap | Consequence | Fix |
|---|---|---|
| hreflang without return link | Ignored by Google | Bidirectional tags |
| Wrong language code (zh-CN vs zh) | Mistargeting | Correct ISO codes |
| Raw machine translation | Quality penalty | Pro translation + proofing |
| Monolingual sitemap | Unindexed pages | Sitemap per language |
| Identical URLs per language | Duplicate content | Translated slugs |
Mini case study
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Sophie, export director of a 90-person mid-cap in Singapore, rolls out an EN/ZH/MS site. The i18n setup costs 4,500 EUR, each added language 2,200 EUR, and translating 20,000 words (ZH + MS) comes to 3,400 EUR at 0.17 EUR/word. Multilingual scope total: about 12,300 EUR. The Chinese-language site generates 12 quote requests per month across the regional market, at a 22,000 EUR average contract and a 10% close rate: nearly 26,000 EUR of monthly revenue, paying back the multilingual investment within the first two weeks.
FAQ
How much to add a language to an existing site?
Between 1,500 and 3,000 EUR of technical integration, plus translation at 0.12-0.20 EUR per word. For 10,000 words, add 1,200 to 2,000 EUR of translation.
Should I machine-translate to save money?
No for B2B: raw machine translation harms credibility and SEO. Choose professional translation with native proofreading, essential for regional markets.
Which URL structure should I pick?
Subfolders (/en/, /zh/, /ms/) are recommended to concentrate domain authority. Slugs should be translated to avoid duplicate content and improve local targeting.
Is hreflang essential?
Yes as soon as several languages target distinct markets. Without correct, reciprocal hreflang, Google may serve the wrong version and dilute your international ranking.
What multilingual maintenance budget?
Between 500 and 900 EUR/month to maintain hreflang, sitemaps, editorial consistency and synchronized updates across languages.
Let's scope your project. An EN/ZH/MS site, i18n setup plus 1,500 to 3,000 EUR per language and professional translation: tell us your target markets and page volume. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
