Work / Case study
Modernising OnlinePajak’s platform to help businesses complete tax workflows faster.
We partnered with the team to redesign key journeys, align product and brand, and lift activation through clearer flows and data-informed iteration.
online-pajak.com
OnlinePajak
Singapore (Hybrid)
Tax Compliance & Administration
Challenge
Turn a fragmented tax and compliance platform into one straightforward place to complete a transaction.
What we did
Defined design vision and strategy
Redesigned the complete product suite
Established an activation improvement process
Refreshed the brand and visual identity
Built a design system
Revamped the marketing site
Established design and research operations
Results
120%
Increase in e-invoice (e-Faktur) use among newly onboarded companies, after the activation work.
340%
Increase in tax payment value, from the design, product and marketing teams working together.
80%
User satisfaction with the new transaction experience.
OnlinePajak (OnlineTax) is a Series-C startup founded in 2015 that has become a major player in the transaction collaboration platform space in Indonesia. The platform has 3 million registered users and its investors include Sequoia, VISA, Warburg Pincus and Tencent. Its aim is to make tax and finance simple, affordable and compliant for businesses of any size.
We worked with the C-suite in Singapore and Jakarta for 18 months, tying the design strategy to the business targets. The redesign impacted the whole company, and every decision was checked against user research and usage data.
There was no design team when we started, so we built the function first, along with the processes, standards and tooling. This foundation was what allowed the team to grow and ship a long run of features thereafter.
In the second quarter of 2023, we launched the new transactional product, 1-Transaction, together with a revitalised brand experience. The comprehensive overhaul drove a 120% increase in leads and activations.




Uncovered the difficulties of making transactions in Indonesia
Getting this right meant learning the domain properly, tax practice most of all. In Indonesia, accounting, VAT, withholding tax and payments each run their own way, so the numbers rarely reconcile. Large finance teams did much of it by hand. That cost them time, and it cost them money when an audit request arrived late or a payment slipped and a penalty followed.
A web platform covering the full lifecycle was the obvious answer from the start. But research also found real demand for standalone features, so someone could finish one task without going through the whole transaction.
Defined the design strategy, roadmap and metrics
Rebuilding a whole platform takes effort from every part of a company, so the plan mattered as much as the design. We wanted to avoid dropping large changes on stakeholders all at once.
We drew up the roadmap with the CEO and the product teams. What counted was what reached customers, not how good the work looked in a prototyping tool.
Changes of this size needed measurable targets, for the design team and for the products. The timeline was tight, so we grew the team quickly and kept engineering from waiting on us.


Established the operational aspect of product design
OnlinePajak had more than 100 staff members across Indonesia, Singapore and Australia. Setting up design and research operations enabled the team to do good work at scale
At its largest the design team had 10 designers and researchers, covering both product and marketing. Every deliverable went through peer review.
We moved task management into Jira so everyone could see the state of the work. Each designer owned a single product, establishing direct accountability.
We also set up a QA process for what went live. The small details are what separate a good product from a great one.

Built the design system
We built a design system on Google’s Material UI, so the product stayed consistent as it grew.
It was built alongside the brand refresh and adopted for the product first, followed by the new marketing site and other touchpoints.
It covered every layout and feature, with each component mapped to the Vuetify library the front end was already using. We kept custom components to a minimum so delivery stayed fast and quality stayed even.

Created a unified transaction experience
The biggest change was 1-Transaction, which automates receivables, payables and compliance in one flow and connects to third-party APIs. People found it hard to use at first because it asked them to work in a new way.
So we let people carry on doing single tasks the way they always had, with the full transaction there when they wanted it.
It has two main parts. A table for managing documents and running bulk actions, and a tool for creating and editing e-documents, grouped by Transaction ID with the next action suggested from each document’s status.


Boosted user activation through data, research and content
The goal was to raise monthly active users among self-serve SMEs through better onboarding and a better experience after the redesign. The main measure was monthly active companies completing high-value tasks, with first-time active companies as the secondary.
We mapped the customer journeys to find where users stalled, talked to them about what was in their way and wrote content that helped them decide faster. We also built interactive tutorials that showed how short each task actually was.
Redefined the OnlinePajak brand
The brand refresh touched almost everything else, so it came early. The aim was to bring the identity up to date and make it work outside Indonesia.
We made a brand book showing how far the identity could stretch, then built out assets for the marketing team that the rest of the company ended up using too.
The new brand showed up first on the marketing site and in the product design system. We rebuilt the marketing site so that it matched what users saw after they logged in.
The result was a bolder identity that was easier to extend, and the whole company adopted it.

Valuable takeaways
Talk to the right customers. Work out who the real users are, speak to them and decide based on what they tell us.
Good content removes most of the friction, and it is what makes a go-to-market plan land.
Shipping new features is only half of it. Going back and improving what is already there matters just as much.
Google Analytics tracking is harder to get right than it looks. Document the tracking plan and check the implementation, or the data will mislead.
On a B2B platform, pick features that have to work on mobile. Making every data-heavy screen responsive is rarely worth it.
Credits
Charles Guinot
CEO, Founder
Leo Haryono
CMO
Andrew Tan
VP, Growth
Ami Iwakami
VP, People
David Morales-Arias
Group COO
Alexa Von Charles
Senior Product Designer
Andrea Ngo
Product Designer
Mo. Army Budi Santosa
Product Designer
Panji Prasetyo
Senior Marketing Designer
Frederico Sandro Baso
Marketing Designer
Methods
- Affinity Mapping
- Benchmarking
- Brand Asset Design
- Brand Book Design
- Branding & Visual Identity
- Card Sorting
- Client & User Interviews
- Conversion Funnel Analysis
- Creative Direction
- Data Analysis
- Design Mentorship
- Design Ops
- Design Sprints
- Design Systems
- Design Thinking Workshops
- Feature Prioritisation Mapping
- Google Analytics (GA4)
- Heuristics Analysis
- Interactive Tutorials
- Low-Fidelity Prototypes
- Moderated User Testing
- Pattern Libraries
- Presentation Design
- Production-Ready Prototypes
- Prototyping
- Research Ops
- Trend Identification
- UI Components
- User Behaviour Tracking
- User Experience Design
- User Interface Design
- User Interviews
- User Journey Mapping
- User Personas
- User Testing
- Wireframing



