- Koinly integrates with 400+ exchanges, wallets, and DeFi platforms — making it one of the most compatible crypto tax tools available today.
- Two main import methods exist: API auto-sync for real-time accuracy, and CSV uploads as a manual fallback when API access isn’t available.
- Even unsupported exchanges have a workaround — Koinly accepts custom CSV uploads, so no transaction data gets left behind.
- Compatibility goes beyond exchanges — Koinly supports hardware wallets like Ledger and Trezor, DeFi protocols, and self-custodial wallets like MetaMask.
- Getting your exchange connections wrong is the #1 cause of inaccurate tax reports — keep reading to avoid the most common setup mistakes.
Connecting your crypto exchanges to Koinly correctly is the difference between a clean tax report and a compliance headache.
Koinly has built a reputation as one of the most exchange-compatible crypto tax platforms on the market, and for good reason. Whether you’re trading on Binance, holding assets in a MetaMask wallet, or farming yield on a DeFi protocol, Koinly is designed to pull it all together in one place. For anyone navigating the increasingly complex world of crypto taxes, tools like Koinly take the guesswork out of tracking hundreds — sometimes thousands — of transactions across multiple platforms.
This guide breaks down exactly how Koinly’s exchange compatibility works, which platforms are supported, and what to do when things don’t sync perfectly.
Koinly Supports 400+ Exchanges: Here’s What That Means for Your Taxes
When Koinly says it supports over 400 exchanges and wallets, that’s not just a marketing number — it reflects the sheer breadth of platforms crypto users actually rely on. From the largest centralized exchanges like Coinbase and Binance to niche altcoin platforms and self-custodial DeFi wallets, Koinly’s compatibility list spans virtually every major corner of the crypto ecosystem.
What this means practically is that most users can get their entire transaction history imported into a single dashboard without manually entering a single trade. Koinly then calculates your capital gains, income, and losses automatically — generating tax reports that meet the requirements of tax authorities in over 20 countries. The broader your exchange usage, the more valuable this compatibility becomes.
How Koinly Connects to Exchanges
Koinly uses two primary methods to import your transaction data: API integration and CSV file uploads. Understanding which method works best for your situation saves time and prevents missing or duplicate transaction errors down the line. For a detailed review of Koinly’s features, you can check out this Koinly review on CoinBureau.
- API Integration: Automatically syncs transaction history in real time using exchange-generated API keys
- CSV File Upload: Manual import method using exported transaction files from your exchange
- Blockchain Wallet Sync: For crypto wallets, Koinly can sync directly using your public wallet address — no API key needed
- Custom CSV Upload: For unsupported exchanges, Koinly accepts custom-formatted CSV files
Most major exchanges support both API and CSV imports, giving you flexibility depending on your setup. However, not all CSV formats from every exchange are natively recognized by Koinly, which is something to watch for when importing from smaller or less common platforms.
API Integration: The Fastest Way to Sync
API integration is the gold standard for connecting your exchange to Koinly. Once you generate read-only API keys from your exchange and paste them into Koinly, the platform automatically pulls your full transaction history and keeps it updated going forward. Most major exchanges have this auto-sync feature, and it requires zero manual work after the initial setup. The key word here is read-only — Koinly only needs permission to view your data, never to trade or move funds.
CSV File Imports: The Manual Backup Option
When an exchange doesn’t offer API access, or if you prefer not to share API credentials, CSV uploads are the fallback. You export a transaction history file directly from your exchange and upload it to Koinly. The catch is that not every exchange exports CSV files in a format Koinly can read natively — in some cases, you’ll need to reformat the file or use Koinly’s custom CSV template to map your data correctly.
Which Method Should You Use?
Use API sync whenever it’s available. It’s faster, more accurate, and eliminates the risk of importing an incomplete date range. Reserve CSV uploads for exchanges that don’t support API connections, or as a one-time historical import when you’re adding an old exchange account that you no longer actively use.
The Biggest Exchanges Koinly Supports
While Koinly supports hundreds of platforms, a handful of major exchanges account for the majority of user transaction volume. Here’s how compatibility looks for the platforms you’re most likely using.
Coinbase and Coinbase Pro
Koinly supports both Coinbase and Coinbase Advanced Trade (formerly Coinbase Pro) via API integration. Coinbase’s API allows Koinly to pull spot trades, staking rewards, and any transfers between accounts. One important note: Coinbase and Coinbase Advanced Trade are treated as separate wallets in Koinly, so if you use both, you’ll need to connect them individually to avoid missing transactions. For those interested in how other platforms are embracing crypto, read about Shopify’s approach to crypto payments.
Binance and Binance US
Binance is one of the most complex exchanges to import due to the sheer volume and variety of transaction types — spot trades, futures, margin trading, staking, savings, and more. Koinly handles Binance via API, but you’ll want to ensure your API key has the correct read permissions enabled for each product type you use. Binance US is supported separately from the global Binance platform and has its own dedicated integration in Koinly’s wallet setup.
One known quirk: Binance limits API history to the past 12 months for certain transaction types. If you’ve been on Binance longer than that, you’ll need to supplement the API sync with a CSV export covering your earlier trading history. For more insights into how blockchain can transform industries, check out this case study on transforming supply chains with blockchain.
Kraken
Kraken’s API integration with Koinly is straightforward and covers trades, deposits, withdrawals, staking rewards, and futures. Kraken is known for having one of the cleaner API setups, making it one of the easiest exchanges to connect without encountering sync errors. For more details on how Koinly works, check out this Koinly review.
KuCoin
KuCoin supports API integration with Koinly, but similar to Binance, it has API history limitations. KuCoin’s API only returns data from the past 12 months for most transaction types, so historical data beyond that window will require a CSV export. KuCoin also separates different account types — main account, trading account, and futures — so make sure all relevant sections are covered in your import.
Bybit
Bybit is fully supported via API in Koinly, covering spot trading, derivatives, and earn products. As Bybit has expanded its product offering significantly in recent years, Koinly’s integration has kept pace, though it’s worth double-checking after any major Bybit platform updates that all transaction categories are syncing correctly.
DeFi Platforms and Wallet Compatibility
DeFi is where crypto tax gets genuinely complicated — and where Koinly’s compatibility list becomes arguably more important than its exchange integrations. Unlike centralized exchanges, DeFi platforms don’t have accounts or API keys. Instead, all activity lives on-chain, tied to your wallet address. Koinly handles this by syncing directly with the blockchain using your public wallet address, reading every transaction your wallet has ever made.
Ethereum-Based Wallets and DeFi Protocols
Ethereum is the backbone of DeFi, and Koinly’s Ethereum compatibility is comprehensive. By entering your Ethereum wallet address (starting with 0x), Koinly automatically pulls every transaction from the blockchain — including ETH transfers, ERC-20 token trades, liquidity pool interactions, NFT purchases, and gas fees. Protocols like Uniswap, Aave, Compound, Curve, and MakerDAO are all recognized, with Koinly attempting to categorize each interaction correctly based on the transaction type.
Solana, Cardano, and Other Chain Support
Beyond Ethereum, Koinly supports a growing list of Layer 1 blockchains. Solana wallet addresses can be synced directly, covering SOL transfers, SPL token trades, and staking rewards. Cardano (ADA) is also supported, along with chains like Avalanche, Polygon, BNB Smart Chain, Fantom, and Terra Classic. For each chain, you simply add your public wallet address as a new wallet in Koinly and the platform handles the rest — reading the on-chain data without requiring any private key access.
MetaMask and Hardware Wallet Integration
MetaMask doesn’t have a native API connection with Koinly — and it doesn’t need one. Since MetaMask is a self-custodial wallet, all of its activity is recorded on whichever blockchain(s) you use it on. You simply add your public Ethereum (or other chain) address to Koinly, and every transaction made through MetaMask is captured automatically. The same approach applies to hardware wallets like Ledger and Trezor — Koinly syncs using your public wallet address, meaning your private keys and seed phrase never leave your device.
How to Add an Exchange to Koinly: Step-by-Step
Getting your first exchange connected to Koinly takes less than five minutes once you know the process. The steps are consistent across most exchanges, with minor variations depending on whether you’re using API sync or CSV upload.
Before you start, have your exchange account open in a separate browser tab. You’ll need to navigate to your exchange’s API management section to generate keys, and having both tabs open simultaneously speeds things up considerably.
Here’s the exact process from start to finish.
1. Create or Log Into Your Koinly Account
Head to Koinly.io and either create a free account or log into your existing one. The free plan allows you to connect exchanges and preview your transaction data — you only need a paid plan when you’re ready to generate a downloadable tax report.
2. Navigate to the Wallets Section
From your Koinly dashboard, click on Wallets in the top navigation menu. This is where every exchange, wallet, and blockchain address you connect will live. Click Add Wallet to begin the connection process.
3. Search for Your Exchange
- Use the search bar to find your exchange by name
- Koinly will display the exchange along with the available import methods (API, CSV, or both)
- Select your exchange from the results to open the setup panel
- If your exchange doesn’t appear, scroll down to find the custom CSV or manual entry options
Most of the 400+ supported platforms appear in the search results instantly. If you’re on a smaller or newer exchange, try searching by a shortened version of the name — sometimes the listing uses a slightly different format than you’d expect.
Koinly also organizes exchanges by region and type, so if the search isn’t returning results, you can browse by category to find your platform manually. For those looking to maximize their returns, you might want to explore strategies such as Binance staking to enhance your cryptocurrency investments.
Once you select your exchange, Koinly provides built-in instructions specific to that platform — including exactly which API permissions to enable and where to find the CSV export option. These in-app guides are genuinely useful and save you from having to hunt through exchange help documentation.
4. Enter API Keys or Upload a CSV
For API sync, go to your exchange’s account settings and navigate to the API management section. Generate a new API key with read-only permissions — never enable trading or withdrawal permissions for a third-party tool. Copy the API key and secret, then paste them into the corresponding fields in Koinly’s wallet setup panel.
For CSV uploads, export your transaction history from your exchange — usually found under account history, reports, or tax documents. Then drag and drop the file into Koinly’s import area. If the file format isn’t recognized, download Koinly’s custom CSV template from the same import screen, fill it in with your transaction data, and re-upload.
5. Let Koinly Sync and Review Your Transactions
After connecting via API or uploading your CSV, Koinly begins processing your transaction data. For API connections, this typically takes a few minutes depending on transaction volume. Once complete, navigate to your Transactions tab and review the imported data for any entries marked with a warning — these usually indicate missing cost basis data, unrecognized tokens, or transfers that need to be matched across wallets.
Common Compatibility Issues and How to Fix Them
Even with 400+ supported platforms, things don’t always sync perfectly on the first try. These are the most frequent issues users run into — and exactly how to resolve them. For instance, understanding blockchain transaction analysis techniques can help troubleshoot syncing problems effectively.
Missing Transactions After Syncing
If transactions are missing after an API sync, the most common culprit is API history limitations on the exchange side. Binance and KuCoin, for example, only return 12 months of history via API. The fix is straightforward: export a CSV file covering the missing date range from your exchange and upload it to the same wallet in Koinly as a supplementary import. Koinly is smart enough to detect and merge overlapping data without creating duplicates — as long as you’re importing into the same wallet entry.
API Key Errors and Permission Settings
An API connection that fails to sync almost always comes down to one of two things: incorrect permissions on the API key, or an IP restriction that’s blocking Koinly’s servers. When generating your API key, make sure you’re enabling read access for all account types you use — spot, futures, margin, and earn accounts often require separate permission toggles on exchanges like Binance.
If your exchange requires IP whitelisting, you’ll need to add Koinly’s IP addresses to your API key’s allowed list. Koinly’s support documentation lists the specific IP addresses to whitelist for major exchanges, and this is often the hidden step that resolves a persistent sync failure.
Duplicate Transactions From Multiple Imports
Duplicate transactions are one of the most common issues when users combine API syncs with CSV uploads for the same exchange. This happens when the date ranges overlap — for instance, if your API pulls the last 12 months and your CSV covers the last 18 months, the middle 12 months get imported twice. For more on maximizing efficiency, you might consider exploring expected returns and pitfalls in other crypto operations.
Koinly has a built-in duplicate detection system, but it’s not perfect in every case. If you spot duplicates in your transaction list, the safest fix is to delete the CSV import and re-upload it with a date range that doesn’t overlap with your API sync. Alternatively, use only one import method for each exchange to eliminate the overlap problem entirely.
Another source of duplicates: importing the same exchange as two separate wallets by mistake. This sometimes happens when users add an exchange once by name and again using a CSV, not realizing Koinly created two separate wallet entries. Check your wallets list for any duplicate exchange entries and merge or delete the redundant one.
- Check your wallet list for duplicate exchange entries with slightly different names
- Adjust CSV date ranges to avoid overlap with your API sync window
- Use the Transactions filter to search for identical amounts on the same date — a reliable way to spot duplicates manually
- Delete and re-import rather than trying to manually delete individual duplicate transactions when the volume is high
- Contact Koinly support if duplicate detection isn’t catching obvious repeats — they can assist with bulk cleanup
What Happens When Your Exchange Isn’t Supported
If your exchange isn’t in Koinly’s library of 400+ supported platforms, you’re not out of options. Koinly accepts custom CSV uploads using its own standardized template, which you can download directly from the wallet setup screen. The template requires specific columns: date, sent amount, sent currency, received amount, received currency, fee amount, fee currency, and a description field. Fill it in with your exchange’s exported data — even if you have to copy and paste manually — and Koinly will process it just like any other import.
For exchanges that export data in an unrecognized format, the most practical approach is to open both files side by side — your exchange’s CSV and Koinly’s template — and remap the columns accordingly. It’s tedious for large transaction histories, but it ensures nothing gets left out of your tax report. If you’re dealing with a significant volume of transactions from an unsupported exchange, Koinly’s support team can sometimes provide guidance on mapping, and there are third-party tools that help reformat exchange CSVs into Koinly-compatible files.
Koinly’s Tax Report Compatibility Across Countries
Koinly isn’t just built for US crypto traders — it generates tax reports tailored to the specific requirements of over 20 countries. The platform automatically applies the correct cost basis method and report format based on the country you select in your account settings, which means the same transaction data can produce different (and locally compliant) reports depending on where you’re filing.
US Tax Forms: Form 8949 and Schedule D
For US users, Koinly generates a completed Form 8949 — the IRS form used to report capital gains and losses from property, which includes cryptocurrency. It also produces a Schedule D summary and a complete audit trail report. Koinly applies either FIFO (First In, First Out), LIFO (Last In, First Out), or HIFO (Highest In, First Out) cost basis methods depending on your selection, which directly affects how much tax you owe. HIFO typically produces the lowest taxable gain and is accepted by the IRS for crypto assets. If you’re interested in how blockchain technology is transforming various sectors, explore this provenance case study for more insights.
Income from staking, mining, and airdrops is reported separately as ordinary income, with USD values calculated at the time of receipt — exactly as the IRS requires. Koinly also flags any transactions that may trigger wash sale considerations or other compliance issues worth reviewing with a tax professional.
UK, Canada, and Australia Report Formats
UK users get a tax report built around HMRC’s Section 104 pooling rules, which use an average cost basis method rather than FIFO or HIFO. Koinly also applies the 30-day same-asset rule (the “bed and breakfasting” rule) automatically, which is a critical — and often missed — requirement for UK crypto tax compliance. The output is a report formatted to match what HMRC expects when declaring crypto gains on a Self Assessment tax return.
For Canadian users, Koinly applies the Adjusted Cost Base (ACB) method as required by the CRA, and generates a summary report compatible with T1 filing. Australian users receive a report aligned with ATO guidance, using a FIFO or “other method” approach and distinguishing between short-term and long-term holdings for the 50% CGT discount eligibility. Each country report includes a full transaction log, capital gains summary, and income breakdown. For a deeper understanding of how blockchain technology is transforming various sectors, check out this case study on transforming supply chains with blockchain.
TurboTax and TaxAct Integration
For users who file through TurboTax, Koinly generates a TurboTax-compatible file (TXF format) that can be directly imported into TurboTax Online or TurboTax Desktop. This eliminates the need to manually enter each trade — instead, your entire capital gains history uploads in a single file import. Koinly also supports direct integration with TaxAct, generating a CSV formatted specifically for TaxAct’s crypto import tool. For those interested in understanding how blockchain can transform various sectors, check out this case study on supply chains.
It’s worth noting that TurboTax has its own native crypto import from a limited number of exchanges, but that list is far shorter than Koinly’s 400+ supported platforms. Using Koinly as the intermediary means you get accurate data from every exchange you use — not just the ones TurboTax directly supports — funneled into your tax software in one clean file.
Koinly Is Only as Accurate as the Data You Feed It
Koinly is a powerful tool, but it’s not magic. The platform calculates gains, losses, and income based entirely on the transaction data you import — which means gaps in your import history directly translate to gaps (or errors) in your tax report. A missing deposit, an unlinked transfer between your own wallets, or an exchange that wasn’t connected can all throw off your cost basis calculations in ways that cascade across your entire portfolio history.
The most common accuracy issue isn’t a Koinly bug — it’s incomplete data from the user side. If you’ve ever moved crypto between exchanges without connecting both sides of the transfer in Koinly, the receiving wallet will show an incoming transaction with no cost basis. Koinly flags these as warnings, but it’s up to you to resolve them by marking the transaction as a transfer or manually entering the original acquisition cost.
The best practice is to connect every exchange, wallet, and blockchain address you’ve ever used — even inactive ones — before generating your tax report. A complete data set means accurate calculations. A partial one means you could be over-reporting gains, under-reporting losses, or both. Take the time to review your transactions list for warnings before downloading any tax report, and treat the review process as just as important as the import process itself.
Frequently Asked Questions
Does Koinly support all major crypto exchanges?
Koinly supports over 400 exchanges, wallets, and DeFi platforms — which covers the vast majority of platforms that crypto users actively trade on. This includes all of the largest centralized exchanges such as Coinbase, Binance, Kraken, KuCoin, Bybit, OKX, Bitfinex, Gemini, and many more. For any platform not natively supported, Koinly’s custom CSV upload option ensures you can still import your transaction history manually.
Can Koinly sync with decentralized exchanges like Uniswap?
Yes. Decentralized exchanges like Uniswap, SushiSwap, and Curve don’t require a separate integration because all of their transactions are recorded on-chain. By connecting your Ethereum wallet address to Koinly, every swap, liquidity deposit, and withdrawal you’ve made through any Ethereum-based DEX is automatically captured and categorized. The same applies to DEXes on other supported chains like BNB Smart Chain, Solana, and Avalanche.
What do I do if my exchange isn’t listed on Koinly?
Download Koinly’s custom CSV template from the wallet setup screen, fill it in with your transaction data using the required column format, and upload it as a custom wallet. The required fields include date, sent and received amounts and currencies, fees, and a description. It takes more manual effort than an API sync, but it ensures your transaction history is included in your tax report.
If you’re dealing with a large volume of transactions from an unsupported exchange, consider reaching out to Koinly’s support team. They can sometimes advise on the fastest way to reformat your exchange’s native CSV export to match Koinly’s requirements, saving you significant time on manual data entry.
Is it safe to connect my exchange API keys to Koinly?
Yes, as long as you follow one critical rule: only generate read-only API keys. A read-only key gives Koinly permission to view your transaction history — nothing else. It cannot place trades, initiate withdrawals, or move funds in any way. Every major exchange offers the option to restrict API key permissions at the time of creation, and Koinly’s in-app setup instructions explicitly guide you to enable read-only access only. Koinly also states that it does not store your API secrets in plain text, and the platform uses industry-standard encryption practices for all stored credentials.
Does Koinly work with hardware wallets like Ledger and Trezor?
Yes. Hardware wallets like Ledger and Trezor store your private keys offline, but all of the transactions made from those wallets are recorded publicly on the blockchain. Koinly connects to hardware wallets using your public wallet address — which you can find in your Ledger Live or Trezor Suite app without exposing any sensitive information. Your private keys and seed phrase never leave your hardware device at any point during the Koinly setup process.
To add a Ledger or Trezor wallet to Koinly, simply go to the Wallets section, click Add Wallet, and search for the specific blockchain your hardware wallet uses (e.g., Ethereum, Bitcoin, Solana). Enter your public address and Koinly will sync the full on-chain history associated with that address automatically.
If you use your hardware wallet across multiple blockchains — which is common with Ledger, since it supports hundreds of assets — you’ll need to add a separate wallet entry in Koinly for each blockchain address. Ledger Live displays your individual address for each supported network, making it straightforward to find the right address for each chain.
Getting your crypto taxes right starts with getting your exchange connections right — Koinly makes that process as seamless as possible, supporting over 400 platforms so you can focus on your portfolio, not your paperwork. For a detailed review of its features, check out this Koinly review.
