01 — Overview
The
Problem
Crypto investors are sitting on gains — and anxiety. Tax law around digital assets is genuinely complicated: short-term vs. long-term, jurisdiction-specific rates, staking income, DeFi transactions. Most people either overpay out of fear or underpay out of confusion.
CryptoTaxCalculator set out to fix this with a mobile-first calculator that gives instant, accurate estimates without requiring an accounting degree to use.
View Live App →
73%
of crypto holders don't file correctly
47
tax jurisdictions supported at launch
3
taps to get your tax estimate
Free
to download on iOS and Android
02 — Challenges
What made
this hard
Crypto tax is objectively one of the most confusing financial topics for everyday users. The design challenge wasn't just making the UI look clean — it was making intimidating complexity feel approachable without dumbing it down.
- Tax rules differ dramatically across 47 countries — the same transaction has different tax implications depending on where you live
- Users range from first-time investors to active traders — the app needed to serve both without alienating either
- Trust is everything in financial apps — users need to feel confident the numbers are correct before acting on them
- Short-term vs. long-term holding periods add calculation complexity that had to be explained clearly in-context
- The app had to handle edge cases like staking rewards, airdrops, and DeFi yield without overwhelming the primary flow
03 — Process
How I approached it
Starting with deep user research across crypto communities, I mapped the anxiety points and built a design framework around reducing cognitive load at every step.
01
User Research
Interviews with 24 crypto holders across different experience levels and jurisdictions. Mapped mental models around tax filing and identified key anxiety triggers.
02
Information Architecture
Simplified the input flow to three core questions: asset type, purchase date, and sale details. Everything else surfaced progressively.
03
Prototype & Test
Six rounds of usability testing with Maze across iOS and Android. Iterated on the jurisdiction selector, results screen, and tax bracket explanation.
04
Visual Design
Dark-first UI built on a green accent system — signalling growth and clarity. Typography hierarchy tuned to make numbers the hero of every screen.
04 — Design Principles
Built on three ideas
◎
Clarity over completeness
Show users exactly what they need to make a decision. Advanced details are always one tap away — never in the way. Progressive disclosure lets the interface breathe.
◈
Trust through transparency
Every result shows the calculation logic. Users can see exactly how their tax liability was derived — not just a number, but an explanation they can trust and verify.
◇
Speed as a feature
The primary flow reaches a result in under 60 seconds. Optimistic UI, smart defaults, and auto-populated fields make the experience feel instant even when calculations are complex.
05 — Key Decisions
The calls
that mattered
Several design decisions shaped the product's core experience. These weren't obvious choices — they came out of testing and tension between competing user needs.
"Tax rate alone isn't enough. Users need to know why — otherwise they don't trust the number."
Research insight, usability testing round 3
- Dark theme by default — financial app conventions signal authority. The dark UI with green accents tested significantly better for perceived trustworthiness among target users
- Jurisdiction first — putting country selection at the start of the flow reduced calculation errors and helped users orient their mental model from the outset
- Short vs. long-term split view — showing both tax scenarios side-by-side helped users understand the value of holding longer without any educational copy required
- No account required — removing the sign-up gate for the core calculation flow increased activation by over 40% in beta testing
- Results as a shareable card — users wanted to show their accountants. Making the results screen screenshot-ready addressed a real workflow need
06 — Outcomes
What I shipped
The app launched across iOS and Android with a clean, fast experience that made crypto tax approachable for the first time for many users.
4.8
App Store rating at launch
<60s
Time to first result
+40%
Activation vs. gated flow
Not requiring an account became one of our biggest differentiators. The transparent calculation breakdown was the most common reason users said they trusted us.
