View and manage everything in one place
The easy tax service for crypto assets
Experience smarter crypto assets investing with Taasfi!
View all your investment assets in one place with My Assets
No more switching between exchanges and wallets—see all your assets in one place. Track your asset flows at a glance and manage them efficiently with an organized portfolio.
Access all your past and present trade history with no limits
Link your exchanges and wallets to automatically organize and view all your trade history
Track your annual PnL
Get a clear snapshot of your yearly investment performance, including PnL per token. You'll even see your average unit price, so you can clearly understand the basis of your PnL.
File your taxes quickly and effortlessly in just one step
We'll automatically generate your tax return in IRS form. At a glance, you can see your income for each year and the key details you need to file, making even complex tax return easier and more straightforward to complete.
Taasfi Tips for smarter tax management!
Calculate unrealized PnL to see what you would have made if you sold your current assets. Use Estimated PnL Plus to manually enter PnL from unconsolidated exchanges into your income.
See the list of exchanges, wallets, and networks supported by Taasfi
We are constantly expanding to reliably connect to more exchanges and networks
Supported Exchanges and Wallets
Supported networks
Connecting to an exchange is simple!
You can easily connect by entering the API key issued directly by the exchange, or use the auto-connect
Option 1
Enter exchange API key directly
Provides a secure way to connect by entering an API key and secret key issued directly from the exchange
Option 2
Taasfi Only
Auto-connect to Exchange
Easily recall your trade history by signing in with an exchange app QR code or entering your exchange account
Why do I need an API key?
Connecting an API key is essential for accurate reporting
To accurately calculate your crypto assets tax, you need to collect all trade history from exchanges and wallets. Just as your tax are calculated based on your economic activity at the end of the year, your crypto assets PnL is calculated based on all your tade history. By connecting an API key, you can automatically retrieve your trade history, calculate your PnL, and file your tax seamlessly.
READY IN 3 STEPS
Just connect your exchange Taasfi handles the tax math
No spreadsheets needed — go from connecting to a finished report in one flow
- 01
Connect exchanges and wallets
Enter an API key or use auto-connect — it takes about a minute
- 02
Transactions collected automatically
We gather every scattered transaction and calculate your gains and losses
- 03
Review your tax report
Get income figures you can file with right away
Thorough security
From service planning to development to deployment, we prioritized information security
Encrypting Sensitive Information
API keys and secret keys are stored encrypted with the AES-256 standard and are protected from direct access to the original data
Key Management via KMS
Block DDoS attacks , web vulnerabilities, and malicious bots at layers 3, 4, and 7, and provide Zero Trust-based access control and real-time security monitoring
Robust Website Security
Enhanced security systems with web firewalls, DDoS protection, and intrusion detection/blocking systems from leading global companies
API keys are set to Read-Only permissions to block risky requests such as trades and withdrawals
Advanced encryption and strict access controls based on AWS KMS prevent unauthorized use of keys
Automatic logging and monitoring system to detect and respond to security threats in real time
Taasfi Plan
Get the Pro Plan for free until December 31, 2026!
My Assets Status
Track the real-time value of your fluctuating assets and view them all in one place.
Transaction Analysis
Analyze all transaction history without any limits on the number of records.
Income Calculation
Calculate valuation amounts and determine your income for the year based on transaction history.
Tax Consultation
Ask questions about virtual asset taxes and get direct answers from professional tax accountants.
Annual Billing Taasfi Plan | Starter $0 | Standard Free$99 | Pro Free$199 |
|---|---|---|---|
| Initial Full Data Migration | |||
| Annual Transaction Limit | 500 txn | 5,000 txn | Unlimited |
| Cost Basis Method | Total Average | Total Avg, Moving Avg | Total Avg, Moving Avg |
| Manual Sync (Direct API Entry) | |||
| Manual Sync (File Upload) | |||
| Auto Sync (Smart Access) | |||
| Exchange Derivatives | |||
| On-chain Networks | |||
| Edit Transaction History | |||
| P&L Simulation | |||
| Tax Report | |||
| Tax Consultation Link | |||
| Tax Support Level | Email Support | Email Support | |
| Tax Filing Proxy | Expert Referral (Fee applies) | Expert Referral (Fee applies) | Expert Referral (Fee applies) |
Sign up now and every plan, up to Pro, is free
Trusted professionals work with Taasfi
Partnering with specialized tax accounting firms and organizations to help our clients grow and develop
세무사 김건태 사무소
세무법인 동안 서초지점
세무회계 대권
델브파트너스
세무회계피아크
아이더블유세무사무소
이상덕 세무사 사무소
와이제이 택스 라운지
세무회계 형년
세무회계 환희
도쿄국제세무사법인
스타시아
Check out Taasfi user reviews
Kenji_crypto
2025.11.18
Crypto tax reporting was honestly so complicated that I almost wanted to give up. This service at least shows you where to start organizing everything. If you expect it to solve 100% of the work automatically, you might be disappointed. However, compared to doing everything completely manually, it is definitely meaningful. Personally, just having all my transaction history consolidated already felt like half the problem was solved.
サラリーマントレーダー
2025.11.20
At first, I was skeptical because it's a relatively new service. But after actually using it, I felt that it truly understands how crypto transactions work. Especially with derivatives trading and fee handling, which were confusing even in other tools, this service separates transactions by type in a way that makes sense. If you've ever lost sleep over crypto taxes, it's worth trying at least once.
HODL派
2025.11.22
Honestly, my first thought was, "Just another tax calculation service." But after using it, I realized it focuses more on tax reporting than on investment tracking. It's not a tool for showing off returns, but something designed with actual tax filing in mind. From a practical standpoint, I actually prefer this approach.
送金多め
2025.11.26
I don't trade very frequently, but I move assets between exchanges quite often, and organizing that was always a hassle. Taasfi treats transfers between exchanges as non-taxable asset movements, which makes the calculations much cleaner. Previously, I was always unsure whether a transfer counted as profit or not. That stress has been greatly reduced. It still feels somewhat in beta, but the direction is clear.
数字が苦手
2025.11.28
I tried it as a way to organize my records before handing them to my tax accountant, and I feel it will make explanations much easier than before. Each transaction is categorized clearly, so I expect communication costs with my accountant to decrease. It feels less like a simple calculator and more like an intermediate organization tool.
税理士に渡す前
2025.11.30
I tend to postpone dealing with crypto taxes and then rush at the last minute. This service is meaningful because it allows you to check your situation in advance. Just having a rough idea of how much tax I might owe this year significantly reduced my psychological burden. Rather than being a fully finished product, it feels like a service that is still growing.
デリバも触る人
2025.11.24
It's not yet a widely known service, but I got the impression that it takes crypto taxation quite seriously. Even if I wouldn't rely on it for everything right away, as a tool that organizes things to a reasonable level, it's more than usable. Personally, I plan to use it again next filing season.