Enhancing conversions through data-driven design

MY ROLE

Product Designer

deliverables

UX/UI design
Usability & AB testing
Heuristic evaluations

TIMEFRAME

4 months
(bi-weekly sprints)

tools

Figma
MixPanel
Hotjar
Userbrain

project type

Product Designer

deliverables

UX/UI design
Usability & AB testing
Heuristic evaluations

timeframe

4 months
(bi-weekly sprints)

tools

Figma
MixPanel
Hotjar
Userbrain

ExpressSteuer is an AI tax return software that makes it possible to submit taxes with ease. The project lasted 4 months, where my objective was to increase conversions of the web-application. This case study exemplifies results of one sprint, in which I used usability testing, data and analytics to increase KPIs of the must-do KYC tasks.

Goals

• Improve conversion rate and user retention via cost-effective, low-hanging fruit ideas

RESULTS

• +6.57% for 'Upload' feature
• +11,30% increase across must-do KYC tasks
• +5% increase in overall conversions

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getting started

As I joined, ExpressSteuer was facing a lot of board pressure to increase web-app conversions. While there were many new sign-ups, almost 50% of them were “stuck” in the funnel, never finishing the process. It was crucial to learn the why’s and fix them. At the same time, there were severe time constraints, dev resource limitations (only one developer available part-time) and the general start-up chaos. We had to act fast and focus on low-effort, high-impact fixes.

→ HMW achieve the most with the limited resources we have?

Analytics revealed that a significant chunk of users would drop off during KYC, failing upload Tax-ID, a key tax document. My initial hypothesis was that users probably didn’t have their Tax-ID at hand (after all, who does?) and/or wouldn’t know where to look for it.


To validate my hypothesis, I first performed a UX/UI audit of our KYC flow, focusing on the screens that could hinder users from completing the task.

The old Tax-ID upload flow

I then also I watched Hotjar heatmaps & interaction behaviour videos, to understand how users interacted with our app and collect qualitative data.

Finally, I also consulted our PMs on user research insights—they confirmed to me, for example, that our users weren't necessarily "tax-fluent". (With the confusing, high-level UX copy that we had throughout our user journey, this was an important insight.)

From issues → to tickets

I then synced with PM & Dev to estimate the effort of issues, in order to focus on high impact, low effort solutions.

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design & iteration

Alongside the UX errors, I also took the opportunity to clean up the UI. Here's an example of two screens, among many that were redesigned:

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UI & DESIGN SYSTEM
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TESTING & ITERATING

+11,30% increase across must-do KYC tasks

The new designs were AB tested against the old ones first with a 10% rollout. As we noticed an improvement across a range of leading, secondary, and primary KPIs, we then rolled the change to 50% and 100% of the users.

With users now being more effectively guided through the upload process, we achieved a +11,30% increase in unblocking users from being stuck in the funnel when it came to uploading their tax-relevant documents.

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results

+11,30% increase across must-do KYC tasks

The new designs were AB tested against the old ones first with a 10% rollout. As we noticed an improvement across a range of leading, secondary, and primary KPIs, we then rolled the change to 50% and 100% of the users.

With users now being more effectively guided through the upload process, we achieved a +11,30% increase in unblocking users from being stuck in the funnel when it came to uploading their tax-relevant documents.

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learnings from the proejct
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