Mt. Gox Taxes: What Do Refunds Mean For Your Tax Bill?
Mt. Gox refunds began rolling out in 2024 and ramped up in recent months, but refunds bring complications to your tax bill. Learn more in our guide, from the crypto tax experts at Camuso CPA.
Mt. Gox payouts have started, with most expected by October 2025, though the deadline has been pushed back before.
Creditors will get about 21% of their claim back in total, with smaller claims often receiving a higher percentage.
Refunds are usually treated as a return of your original investment and are not taxable unless they exceed your cost basis.
You can only claim a loss once final payouts are complete, and for 2025, you only report money or crypto actually received.
When will Mt. Gox payout?
In theory, all interim payouts by Mt. Gox must be made by October 2025, but this date has previously been pushed back several times.
However, some customers, who opted for the early lump sum payment option, have begun receiving initial payouts.
Recently, it was reported that Mt. Gox had moved $930 million of Bitcoin into new wallets, which may indicate that payouts are imminent.
Mt. Gox repayment plan and options
April 6, 2023, marked the final date for creditors to register for Mt Gox repayment.
Creditors who chose ELSP (Early Lump Sum Payment) or the Intermediate portion of the final payment should receive funds by October 31, 2025, with cash payments starting around Christmas 2023 and crypto payouts commencing in July 2024.
If your initial payout feels small, it's likely because you selected the “Final Payment” option, receiving only the Intermediate Payment so far, roughly 6% of your total claim. The balance waits until disputed claims are resolved.
It’s estimated total eventual repayment will be about 21% of your claim, meaning after 6% paid initially, roughly another 15% remains in the final payout.
Not all claims are paid uniformly. Two factors are prioritized before proportional redistribution:
Cash-claimed creditors get full repayment (100%) plus ~26% in delay damages.
Small-sum credits (claims ≤ ¥200,000) receive 100% of their 2018 valuation, regardless of claim size.
Example:
A ¥300k claim:
¥200k at 100% + 21% of remaining ¥100k = ¥221k (~73.6%).
A ¥3 million claim:
¥200k at 100% + 21% of the remaining ¥2.8 million = ¥788k, which is 19.6% of the total claim
This means smaller claims can see higher payout percentages, even nearing 100%. Repayment is split between Bitcoin/BCH and cash based on the revival plan terms; not everyone gets 21% in crypto. The allocation depends on your choice and small-sum factors.
It’s important to note, depending on your claim and the payout option you opted for, that final payments for some creditors will not happen until all court proceedings are concluded. There is no set date for this timeline yet, but some estimates vary from 5 to 9 years.
What do Mt. Gox refunds mean for my taxes?
Simple question, but there’s no simple answer for Mt. Gox taxes, as it all comes down to your specific circumstances, so let’s break it down with common questions answered by Patrick Camuso, CPA.
Could I realize a loss for Mt. Gox when it collapsed?
Investors could not generally realize a loss at the point of the Mt. Gox collapse, as under IRC §165, a deductible loss requires a “closed and completed” transaction. Because Mt. Gox entered bankruptcy proceedings and there was a possibility of recovery, most taxpayers could not claim a loss in 2014. The IRS generally requires that recovery prospects be exhausted before a loss is recognized.
Is my Mt. Gox refund taxable?
Given that investors could not generally claim losses in relation to Mt. Gox, for the majority of investors, the Mt. Gox refund(s) is not a taxable event in itself. This would generally be treated as a return of capital and non-taxable up to its original cost basis. This holds true whether you’ve received a cash or crypto refund.
However, any amount exceeding your cost basis may be a capital gain.
Tip: If an investor did claim a loss in 2014 and has now received a payout, the tax benefit rule (§111) applies. The refund is taxable income to the extent the earlier deduction reduced their taxes.
Can I realize a loss now that I’ve received my Mt. Gox refund?
This depends on the repayment plan you opted for. Only at the point when payouts are finalized, or it becomes clear that no further recovery will occur, can investors realize a loss.
So, for investors who opted for the payment plan to receive partial payouts with a final payout to follow at a later date, realizing a loss is not yet possible, given that a final payout remains part of that plan.
Until then, any unrecovered basis remains tied up in the claim, while each distribution reduces your claim basis.
Can I adjust my cost basis according to the returned proportion of assets?
Yes.
The returned portion inherits its pro-rata share of your original basis for that asset; any excess amounts and any non-like assets are measured against the basis allocated to those categories, and any unrecovered basis remains with the claim until final resolution.
How do I calculate my gain/loss from Mt. Gox?
You need to track your remaining basis in the claim in order to determine your gains and losses.
If you receive the same asset you originally held, such as BTC for BTC, the returned portion inherits its pro-rata share of your original basis, and no gain or loss is recognized at the time of receipt. Any gain or loss is only recognized later when you dispose of the returned crypto, measured against that carried-over basis.
If you receive cash, stock, or crypto in excess of what you originally held, the fair market value of that distribution on the date received is compared to the portion of basis allocated to it; any excess over basis is a capital gain, and if the fair market value is less than basis you recognize a capital loss. Any portion of your basis that remains tied to unrecoverable amounts stays with the claim until proceedings are finalized, at which point any remaining unrecovered basis becomes a deductible loss.
How do I deal with my Mt. Gox refund in my 2025 tax return?
Your reporting depends on the timing and nature of the payout.
If you receive a distribution in 2025, record the fair market value of the assets you receive on the date of receipt and apply that value against your remaining claim basis. Returned BTC or BCH carry their allocated basis forward with no gain or loss recognized at the time of receipt; for cash, stock, or any crypto received in excess of your original holdings, compare the fair market value to the portion of basis allocated and report any gain or loss immediately.
If no distribution is made in 2025, there is nothing to report for that year, and your unrecovered basis remains tied to the claim until additional distributions are made or court proceedings conclude and the unrecoverable amount is confirmed. If you later sell any refunded crypto, calculate your gain or loss using the adjusted basis assigned at the time of receipt, and begin your holding period on the date the crypto was received.
Koinly can help with Mt. Gox taxes…
Koinly can help you figure out your crypto taxes, including any Mt. Gox refunds. We have a dedicated article on how to deal with Mt. Gox payouts and Chapter 11 reimbursements.
