Bithumb tax: your Korea crypto taxes, sorted

Working out your Bithumb tax? Bithumb is one of South Korea's major exchanges, with spot trading and staking. As with any Korean venue, the timeline for individual crypto tax has shifted, so keeping a clean, complete record now is what matters. This guide explains what Bithumb provides, how to export your full history, and how CryptaTax turns it into a Korea-ready report. General information, not tax advice.

General information, not tax advice. What Bithumb reports and which documents it offers can change and varies by country — verify against Bithumb and your local tax authority or a qualified advisor.

Does Bithumb report your crypto to the tax authorities?

Whether Bithumb shares data with your tax authority depends on your country and changes over time, so do not treat “they won't know” as a plan. Exchanges are increasingly inside information-reporting frameworks that push account and transaction data to tax authorities, and that net is widening, not narrowing. The safe approach is to assume your Bithumb activity is visible and to report it correctly — which is exactly what a clean, reconciled Bithumb tax report lets you do.

Whatever Bithumb does or does not file on your behalf, the legal duty to report your gains and income is yours. That is why getting your full history out of Bithumb and reconciling it properly matters more than whether a particular summary lands in your inbox.

What Bithumb tax documents you can get

Like most exchanges, Bithumb can hand you raw data and sometimes summaries, but it generally cannot produce your final tax numbers — because it only sees what happened on Bithumb, not the coins you moved in from a wallet or another exchange. From your account you can usually obtain:

• a transaction history export (CSV or similar) covering your activity, deposits and withdrawals;
• an order / trade history showing each fill with its fees;
• sometimes a gain/loss or account summary, whose accuracy still depends on whether your full cost-basis picture is present — which on a single exchange it rarely is.

The catch with anything Bithumb generates on its own is cost basis and scope. If you sent coins to Bithumb that you bought elsewhere, Bithumb does not know what you paid, so any gain it shows can be wrong. Reliable numbers come from combining your Bithumb history with every other wallet and exchange you use — the job CryptaTax does.

Types of Bithumb activity and how each is taxed

A single Bithumb account usually mixes several kinds of activity, and each is taxed differently. Sorting your history into these buckets is most of the battle — the sections below cover the Bithumb-specific ones in full.

Spot trades

Each spot disposal carries a cost basis and posts a gain or loss; buying with won just sets the basis.

Staking rewards

If you stake on Bithumb, the rewards are generally income at their value on receipt, then carried forward as basis.

Deposits, withdrawals and transfers

Moving your own coins in or out is a transfer, not a sale, but both legs must be matched.

Bithumb and Korea's crypto-tax timeline

The dominant factor in your Bithumb tax is Korea, where individual crypto taxation has been deferred more than once. The practical implication holds regardless of the current date: the obligation builds on your historical record, so a clean, complete account of your Bithumb activity now lets you file accurately whenever the rules take effect. See the South Korea crypto tax guide for the current position, and let CryptaTax keep your figures ready.

Cost basis depends on your full history, so completeness matters even before a filing is due. CryptaTax consolidates Bithumb with your other accounts so the totals reflect your whole position rather than a partial slice.

Spot and staking on Bithumb

Beyond plain trading, staking rewards — where you use them — are generally income at their value on receipt, with that value carried forward as basis for a later disposal. Because rewards arrive as small receipts rather than trades, a plain export tends to under-represent them. CryptaTax reads staking receipts explicitly, values each on receipt, and matches transfers to your own wallets so nothing is double-counted, keeping the record clean for a Korean return.

Combining Bithumb with your other accounts

A Korean return, when it applies, is built on your whole position rather than one venue. Coins moved into Bithumb from another platform carry a basis it never saw, and activity on a second exchange or a wallet is invisible to it — so a Bithumb-only view can mislead. CryptaTax consolidates Bithumb with every other wallet and exchange you use, matches the transfers between them, and values everything in won, so your record reflects your complete history. Keeping that consolidated record now means an accurate Korean return whenever individual crypto tax takes effect.

In practice that means connecting Bithumb once and letting CryptaTax keep it current alongside your other accounts, so the consolidated, won-valued record is always ready rather than rebuilt under deadline pressure. The reconciliation flags anything that does not line up — an unmatched transfer to your wallet, a reward not yet classified — so the figures hold together whenever Korean filing applies, and you confirm them rather than reconstruct them.

How to export your full Bithumb transaction history

You have two ways to get your data out, and the choice mainly affects how much manual work is left over:

1. API connection (recommended) — create a read-only API key in your Bithumb account and connect it to CryptaTax. This pulls your history automatically and keeps it current, with no spreadsheets to download each time.
2. CSV export — download your history from Bithumb and import it. This works everywhere but is a snapshot, so you repeat it whenever you trade again.

Whichever you choose, make sure the export covers your entire time on Bithumb, not just the current tax year. Cost basis depends on when you first acquired each coin, so a partial history produces partial — and usually wrong — numbers.

Common Bithumb reconciliation issues

Most wrong Bithumb tax figures come from a handful of recurring problems. Knowing them up front saves hours of clean-up:

• Transfers in and out of Bithumb — moving your own coins between Bithumb, a wallet or another platform is not a sale, but naive tools record it as one and invent a gain. Both legs must be matched.
• Missing cost basis — coins bought elsewhere and sold on Bithumb have no basis in the Bithumb export alone; the basis has to come from the source.
• Fees — trading and withdrawal fees affect your gain and must be attributed correctly.
• Staking receipts — income events a trades-only export under-represents.
• Partial history — Korean reporting builds on your full record.

How CryptaTax does your Bithumb taxes for you

CryptaTax connects your Bithumb account alongside every other wallet and exchange you use, then does the reconciliation the export cannot:

1. Import your complete Bithumb history by read-only API or CSV.
2. Match transfers between Bithumb and your other accounts so they are not taxed as disposals.
3. Classify trades, staking rewards and conversions and rebuild cost basis across every source using a consistent method.
4. Produce a report — capital gains and income — ready to file or hand to your accountant, with each figure traceable to its source transaction.

The result is one set of numbers for your whole portfolio, with Bithumb as one input among many, rather than a stack of exports you stitch together by hand. Import your exchanges and wallets → · Crypto tax calculator →

Why your Bithumb numbers are only part of the picture

It bears repeating because it is the root of most errors: Bithumb can only ever report on what happened inside Bithumb. The moment you move coins to a wallet, trade on a second exchange, or earn rewards on-chain, your true tax position spans sources none of them sees in full. A figure that looks authoritative on a Bithumb statement can still be wrong for your return, simply because Bithumb is missing context it never had. CryptaTax treats Bithumb as one feed among many and reconciles across all of them, which is the only way to get a number that holds up.

Setting up the Bithumb connection safely

When you connect Bithumb to any tax tool, use a read-only API key. A read-only key lets the tool see your history but cannot trade, withdraw or move funds — so even if it leaked, your assets are safe. A few sensible habits:

• create the key with read-only / view permissions only — never enable trading or withdrawals;
• if Bithumb offers IP allow-listing, restrict the key where practical;
• name the key so you remember what it is for, and revoke it if you stop using the tool;
• prefer the API connection over emailed CSVs, which can sit unencrypted in your inbox.

CryptaTax only ever needs to read your Bithumb history to do the maths; it never needs the ability to move your funds, and you stay in full control of your account.

Mistakes to avoid with your Bithumb taxes

• Only exporting the current year — cost basis depends on your full history on Bithumb.
• Trusting a single gain/loss summary blindly — it cannot know the basis of coins you moved in from elsewhere.
• Ignoring transfers — your own moves in and out of Bithumb are not sales; treat them as transfers or you will overpay.
• Forgetting staking income — rewards are generally taxable at receipt.
• Waiting until filing applies to start recording — reconstructing trades later invites errors.

Your Bithumb tax checklist

• export or connect your full Bithumb history, from your first transaction;
• connect every other wallet and exchange so transfers can be matched;
• include staking rewards, where you use them;
• check Korea's current position (see the South Korea guide);
• apply a consistent cost-basis method allowed in your country;
• produce a report where every figure traces back to a source transaction.

Work through that list once and your Bithumb taxes stop being a guess. CryptaTax does every step of it for you, turning a year of Bithumb activity into numbers you can stand behind.

Other exchanges and wallets

Use more than one venue? That is the norm, and it is exactly why an exchange's own numbers fall short. Connect each one so your report covers everything: Upbit, Korbit, Binance, OKX, or see the full integrations list.