Last updated on 7 August 2026
6 Tips to Connect Your Coinbase API to Koinly Easily
You can link your Coinbase account to Koinly by generating an API key on Coinbase and adding it to your Koinly account. It’s simple, secure, and saves you hours of manual work.
People often worry about calculating crypto taxes. It can feel overwhelming when you have hundreds of transactions. That’s why tools like Koinly exist. They help you track your trades, profits, and losses. But for Koinly to do its job well, you need to feed it the right data.
Coinbase is one of the largest crypto exchanges in the world. It has more than 100 million users worldwide, according to Statista. If you use Coinbase, you need to get your transaction history into Koinly. The easiest way to do this is through an API.
What is an API?
Before we go further, let’s clear up what an API is. API stands for Application Programming Interface. In simple words, it lets two apps talk to each other securely. When you create an API connection between Coinbase and Koinly, you let Koinly “read” your Coinbase transactions automatically.
You don’t have to upload CSV files every month. You don’t have to worry about missing transactions. Your gains and losses get updated automatically. And your tax reports stay accurate.
Why Use Koinly for Coinbase?
Koinly is trusted by more than 1 million crypto investors globally. It supports hundreds of wallets and exchanges. And it’s designed for people who want to stay compliant with tax rules.
For example, in the UK, HMRC expects you to report your crypto capital gains and income. The same applies in the US, where the IRS treats crypto as property. If you don’t track things properly, you could underreport and face penalties.
A direct API link saves you from this. You get the latest trades, deposits, withdrawals, and staking rewards in one place. Koinly even spots missing data and duplicate transactions.
6 Steps to Connect Coinbase API to Koinly
Here’s how you can do it step by step.
1. Log in to Coinbase
Go to your Coinbase account. Always make sure you’re using the official Coinbase website or app. There are many scams around fake Coinbase login pages.
2. Create an API Key
Click on your profile icon and go to Settings. Then look for API or API Management. Click on Create API Key.
You’ll be asked to choose permissions. For Koinly, you only need “Read” access. Never give “Write” or “Trade” permissions if you’re connecting to a tax tool. This keeps your funds safe.
3. Whitelist IP Addresses (Optional)
Some people like to whitelist IP addresses for more security. Koinly provides a list of IPs. If you want to add them, copy them from your Koinly account settings and paste them in Coinbase’s API settings.
4. Copy API Key and Secret
When you create the API key, Coinbase will show you two things: an API key and an API secret. Copy both. Keep them safe. You won’t see the secret again once you leave the page.
5. Log in to Koinly
Go to your Koinly account. If you don’t have one, you can sign up for free. Click on Add Wallet and choose Coinbase. You’ll see an option to connect via API.
6. Paste API Details
Paste the API key and secret you copied from Coinbase. Click Secure Import. That’s it. Koinly will start importing your transactions automatically.
Depending on how many transactions you have, this can take a few minutes or longer.
Common Mistakes to Avoid
Some people forget to give “Read” permissions when creating the API. If you skip this, Koinly can’t access your transaction data. Double-check that you tick “Read Accounts” and “Read Transactions”.
Another mistake is deleting the API key by accident. If you do, the connection breaks, and Koinly can’t pull new data.
Also, remember that API keys are sensitive. Never share them with anyone else. Treat them like your bank PIN.
Is Connecting by API Safe?
A lot of people ask if APIs are safe. Good question. The answer is yes, if you do it right.
When you connect your Coinbase API to Koinly, you only give “Read” access. This means Koinly can only see your transactions. It can’t move your funds or trade on your behalf.
According to Coinbase, they use strong encryption and two-factor authentication (2FA) to protect your account. Koinly also uses bank-level security standards.
So, as long as you keep your API key private and only use trusted platforms, your data stays safe.
Example: How This Helps You?
Imagine you bought Bitcoin and Ethereum on Coinbase for two years. You made dozens of trades and received staking rewards.
If you do this by hand, you’ll need to download CSVs every time you trade. You’d then upload them to Koinly or any other tax software. It’s easy to make mistakes.
But when you link via API, all your new transactions get pulled automatically. If you make a new trade tomorrow, Koinly picks it up. If you receive staking income, Koinly knows.
When it’s time to file taxes, your report is ready. You can share this with your accountant or HMRC.
Research: Why This Matters?
A recent report by CoinLedger shows that 53% of crypto investors make mistakes in their tax reports. Most of these errors come from missing transactions.
When you connect by API, you reduce this risk. You also save time and avoid stress during tax season.
Final Tips
Always keep your tax records. HMRC and IRS can audit crypto investors for up to 6 years or more. A tool like Koinly keeps your records tidy.
Check your API connection once in a while. Make sure it’s pulling the right data. And if you change your Coinbase password or security settings, check if you need to update your API key too.
Final Words
Connecting your Coinbase API to Koinly is the best way to keep your crypto taxes simple and accurate. It saves you hours, reduces mistakes, and helps you stay compliant.
If you need help getting your crypto accounts organised or you want to stay ahead of HMRC rules, talk to experts who understand crypto.
Need help with crypto tax and accounting? Visit Crypto Accountants.
FAQs
Can I just upload CSV files instead?
Yes, you can. But using the API is better because it updates automatically and you won’t miss new transactions.
Is my crypto safe if I connect my API?
Yes. You only give Koinly permission to read your data. It can’t move or spend your coins.
Do I have to pay for Koinly to connect my API?
No, connecting your wallet or exchange is free. You only pay Koinly when you want to download your tax report.
