How to measure ROI on localisation projects

‍

Many companies invest in localisation. But can they prove it’s working?

Localisation is no longer optional for companies expanding across borders. It’s a strategic investment that directly impacts customer experience, brand perception, and revenue.

But there’s a common challenge. While most organisations understand the importance of localisation, many still struggle to answer a simple question: is it actually delivering a return?

Measuring localisation ROI is not always straightforward. Its impact goes beyond immediate sales and includes factors like trust, engagement, and long-term growth. Still, with the right approach, it is possible to quantify its value and make smarter, data-driven decisions.

‍

How to define and measure localisation ROI

Before measuring ROI, it’s important to define what success looks like.

Localisation goals vary depending on the business. Some companies aim to enter new markets. Others focus on increasing conversions, reducing support costs, or improving user experience.

Without clear objectives, ROI becomes impossible to measure.

To avoid this, each localisation project should start with specific, measurable goals, such as:

• Increasing conversion rates in a target market
• Reducing customer support tickets in a specific language
• Improving engagement on localised content
• Growing revenue from international users.

Once these goals are defined, performance can be tracked against real business outcomes.

At its core, ROI is a simple calculation:

• ROI = (Gain from localisation – Cost of localisation) / Cost of localisation

The challenge lies in identifying and measuring both sides accurately.

A practical approach typically includes five steps:

1. Establish a baseline: Measure current performance before localisation. This may include conversion rates, traffic, support volume, or revenue per market
2. Localize strategically: Focus on high-impact content first, such as landing pages, product descriptions, onboarding flows, or help centres
3. Track post-localisation performance: Monitor how metrics evolve after localisation. Look for changes in engagement, conversions, or customer behaviour
4. Compare results against costs: Calculate the investment, including translation, technology, and project management, and compare it with the gains
5. Analyse and optimise: Use insights to refine your strategy, prioritise high-performing markets, and improve future projects.

‍

Which metrics actually show ROI?

Localisation ROI becomes clearer when tied to concrete performance indicators.

Some of the most relevant metrics include:

• Conversion rate: localised content often increases conversions by making the experience more intuitive and trustworthy
• Revenue by market: growth in international sales after localisation is one of the clearest ROI indicators
• Engagement metrics: time on page, bounce rate, and interaction levels can reveal how well content resonates locally
• Customer support volume: translating FAQs and user guides often reduces support tickets, lowering operational costs
• Customer retention: users are more likely to return when they feel understood in their own language.

For example, an e-commerce company localising its product pages may see higher conversion rates and fewer abandoned carts. A SaaS company translating onboarding flows may reduce churn and support requests. These improvements translate directly into measurable financial impact.

‍

Connecting localisation to business KPIs

To demonstrate ROI clearly, localisation metrics must be linked to broader business performance.

For example:

• An increase in international sales after localising a website
• A drop in support tickets after translating help content
• Higher engagement after adapting marketing campaigns.

When these metrics are integrated into overall reporting, the value of localisation becomes easier to quantify.

This also helps decision-makers identify which markets and languages generate the highest return, allowing for better resource allocation and planning.

‍

What drives localisation ROI over time

Localisation ROI is not limited to short-term gains. While improvements in conversions or engagement can appear quickly, many benefits build gradually.

A well-localised experience strengthens brand recognition, improves customer loyalty, and increases lifetime value. These long-term effects are harder to isolate, but they are critical for sustainable growth.

Understanding the investment side is equally important.

Localisation costs typically include translation, adaptation, project management, technology, and quality assurance. However, these are not one-off expenses. Over time, assets such as translation memories and terminology databases reduce costs, improve consistency, and accelerate delivery.

Technology plays a central role in this process.

At t’works, we combine AI-assisted workflows with human expertise to optimise efficiency without compromising quality. AI helps analyse previous translations, recognise patterns, and suggest consistent terminology, while experienced linguists ensure accuracy, tone, and cultural relevance.

This balance between technology and people is what allows localisation to scale effectively while maintaining the quality that drives real business results.

‍

Why localisation ROI varies (and what companies often overlook)

Localisation performance is rarely uniform across markets. Some regions generate quick returns, while others require time to build awareness, trust, and visibility. Continuous measurement allows companies to adapt strategies, refine messaging, and prioritise investments more effectively.

Localisation is also a learning process. Each project provides insights into customer behaviour, tone preferences, and market expectations. Over time, this knowledge becomes a valuable asset that improves decision-making and campaign performance.

Beyond external impact, localisation also delivers internal value that is often overlooked.

Consistent multilingual documentation improves collaboration across teams. Marketing, legal, and technical departments can work more efficiently when they rely on aligned terminology and accurate translations. This reduces miscommunication, speeds up workflows, and strengthens brand consistency across markets.

These operational gains may not be immediately visible to customers, but they contribute directly to overall efficiency and ROI.

‍

Turning localiSation into measurable business impact

LocaliSation ROI is not just about comparing cost and revenue. It reflects how effectively a company connects with its audience across languages and cultures.

When communication feels natural and culturally relevant, customers engage more, trust the brand, and remain loyal over time. These outcomes translate into measurable business results.

The key is to approach localiSation strategically, track performance consistently, and connect linguistic efforts to business metrics.

At t’works, we help organisations turn localiSation into a measurable growth driver. By combining technology, structured workflows, and expert teams, we ensure that every project contributes to clear, data-backed outcomes.

If you’re looking to better understand or improve the ROI of your localiSation efforts, our team is here to help. Get in touch to explore how we can support your strategy.

Because when communication works, results follow.

‍