My December Crypto Tax Checklist: 9 Moves Before Midnight (7 Countries)
Every autumn I run the same checklist on my own portfolio. The first thing to accept: December 31 is not actually everyone's deadline — Britain closes in April, India in March, Australia in June. Here are the nine moves that matter, with each country's dates, free allowances and loss rules attached.
Image: Illustrative purposes. Rules cited from the IRS Schedule D/Form 8949 and Section 1091, H.R. 10357 (as advanced by House Ways and Means, September 2026), HMRC Cryptoassets Manual, §23 EStG, CRA superficial-loss rules, ATO CGT guidance, NTA cryptoasset guidance and India's VDA provisions.
The year I first had real crypto gains, I spent December 24 refreshing candle charts and did my "tax planning" on December 30 at 11pm. I sold one coin in a panic, repurchased it three days later, and only learned in February that the same two trades would have been denied in London and applauded in Berlin. I was filing in the US, so it worked out — but I'd made the right move for the wrong reason, which is just luck with better branding.
Since then I run a proper checklist, one evening in late September or early October, while the last quarter still has room. This year I wrote it down. Before the nine moves, one table that prevents the single dumbest error — missing your own country's deadline.
| Country | Tax year-end | Loss repurchase rule | Free amount to use |
|---|---|---|---|
| US | Dec 31 | None for direct coins (for now); ETF shares: 30 days | 0% LTCG bracket to fill |
| UK | Apr 5 | Same-day + 30-day B&B | £3,000 per person (£6,000 per couple) |
| Germany | Dec 31 | No formal rule; losses ring-fenced | €1,000 hard cliff; 1-year tranche exemption |
| Canada | Dec 31 | 61-day superficial-loss window, incl. spouse | No CGT allowance (50% inclusion only) |
| Australia | Jun 30 | No statutory rule; Part IVA applies | No de minimis (50% discount after 12 mo) |
| Japan | Dec 31 | No formal rule; losses barely help | ¥200,000 misc-income floor |
| India | Mar 31 | Losses denied any tax effect | None (flat 30% + 1% TDS) |
1. Tally the year before you touch anything
Every strategy below depends on one number: net realized gains plus income for the year. Pull every disposal — sales, coin-to-coin swaps, card spending, stablecoin conversions people forget — into one list, and separately total income events: staking, airdrops, mining, referral payouts. Until those two figures exist, "should I harvest losses?" is unanswerable.
This is where my Friday record-keeping routine pays me back; the whole tally takes twenty minutes because the sheet already exists. If yours doesn't, start with the export files and accept the reconstruction as move zero. I then sanity-check a few sales against the calculator before believing any total.
2. Harvest losses on your country's actual schedule
A coin down 60% in your wallet is not a deduction. A coin down 60% that you sold is. The realization has to happen before the year-end in the table above, and the repurchase rules are where countries diverge hardest.
United States: direct crypto still sits outside Section 1091, so selling at a loss and rebuying the same coin is federally permissible today. Two warnings I now treat as flashing lights. First, H.R. 10357 — the Digital Asset Tax Certainty Act — would extend wash-sale and constructive-sale treatment to digital assets on enactment, with no announced grandfathering; it cleared committee in September and could be attached to must-pass legislation. A December harvest-and-rebuy is a bet on the congressional calendar. Second, spot bitcoin ETF shares are securities; the 30-day rule already applies to them, and inside an IRA too. Net losses offset gains, then up to $3,000 of ordinary income, with the rest carried forward.
United Kingdom: the same-day and 30-day bed-and-breakfast rules match a loss sale against coins you buy back in the window; the loss doesn't disappear, it sinks into pool cost, which isn't what you wanted. Either stay out for 31 days or don't harvest. And mark the real deadline in March, not December: a loss for 2026/27 must be realized before April 6, with the repurchase window landing after that.
Canada: the superficial-loss rule runs 61 days — 30 days on either side of the sale — and catches your spouse and affiliated accounts. Pause the family's auto-buys around it. Australia: no mechanical rule, but the ATO applies Part IVA anti-avoidance to obvious sell-and-rebuy shams; the genuine planning window runs January to June. Germany: crypto losses only offset other §23 private-sale gains and don't carry to wages. Japan: miscellaneous crypto losses generally can't shelter salary income at all. India: VDA losses offset nothing, ever — selling a loser "for tax" is pure self-harm.
The mechanics and the country math are in the loss-harvesting guide, and I model every candidate sale in the dedicated harvesting calculator before executing.
3. Spend the free allowances that expire
Some allowances are use-it-or-lose-it by year-end, and leaving them unused is the most common overpayment I see among careful investors.
UK: the £3,000 annual exempt amount dies every April 5; a couple gets £6,000 across two persons via genuine spousal transfers. Gains under the cap are free, but you have to actually realize them — you cannot bank the allowance for next year. Germany: the €1,000 private-sale allowance also resets December 31, but it's a cliff: €1,001 of short-term gains means tax on the full amount, so trimming €990 of alts is smart and €1,300 is not. US: the move isn't an allowance, it's the 0% long-term bracket — for 2026 it reaches roughly $49,450 of taxable income for singles and about $98,900 for joint filers. Realizing long-held coins up to the line, then rebuying to reset basis, is genuinely free at the federal level. Mind the cliffs past it: 15% tax, the 3.8% NIIT at separate MAGI thresholds, and Medicare IRMAA two years later. Japan's ¥200,000 miscellaneous-income floor is a filing threshold, not a true exemption — resident tax can still apply. Canada, Australia and India give no small-gains allowance at all.
4. Work the holding-period clocks
Time is a tax rate, and January changes the math on specific coins. In the US, a coin bought in December 2025 and sold in January 2027 crosses into long-term treatment only if it was acquired before early January 2026 — pull up the lot list and check exact dates, not vibes. In Germany this move is powerful: if a tranche hits its 365th day on January 9, waiting nine days can take an entire gain from taxable to exempt. I've postponed a sale into the new year for exactly this, and the German rule page walks the clock (with the staked-coin caveat, where ten years can apply).
Australia rewards the same patience differently: parcels past 12 months get the 50% discount, so a parcel bought in May 2026 is worth waiting on past May 2027 if nothing else forces the sale. The UK, Canada and India give no time discount whatsoever — waiting changes nothing there, so don't let an American friend's "just hold a year" advice cross the border.
5. Fund the estimated-tax payments nobody withholds for you
No country withholds tax when you sell bitcoin into a stablecoin, and a December gain without a January payment is how underpayment penalties start. The US Q4 estimate for 2026 is due January 15, 2027 — use the 90%/100%/110%-of-last-year safe harbors if you'd rather not pin down the exact number. The UK's January 31 payment on account covers income tax (including staking and trading income), while CGT is settled separately — don't assume a capital gain is hidden inside it. Germany's §37 Vorauszahlungen run quarterly, Canada and Australia have instalment regimes once prior-year tax crosses their thresholds, and India's advance-tax ladder (15/45/75/100%) puts the final 100% at March 15. The full country-by-country schedule is in the quarterly tax guide.
6. Sell through the tax-smart doors first
If a gain is happening anyway this year, order matters. Before a plain market sale I run through: can appreciated coins be donated directly to a qualified charity (the US fair-value deduction — no gain, full deduction)? Can a spouse with an unused allowance or lower band take part of the disposal, genuinely and documented (the full couples playbook is worth reading)? Can the position move into a retirement wrapper for future growth — a self-directed IRA in the US, or a bitcoin ETF inside a Canadian TFSA/RRSP (direct coins aren't qualified investments in those accounts)? And can losers be sold against the winners in the same window so the net figure, not the gross one, drives the bill?
7. Decide which year the income lands in
A few decisions genuinely move income between years. A client can choose whether an invoice paid in crypto settles December 30 or January 2 (the FMV differs with the price). Staking that auto-claims weekly can't be postponed, but a manual claim you control might be timed either side of New Year. A year-end bonus paid in crypto is income at arrival — coordinate with payroll rather than discovering it in the T4/W-2 equivalent. The point isn't to play games; it's to stop a coin that arrives on December 31 from being both this year's income and next year's problem without anyone deciding.
8. Clean the records before the forms arrive
January through March is when 1099-DAs land in American mailboxes and CARF data flows to HMRC, the BZSt, the ATO and beyond. The window to fix discrepancies is before the forms do. Before year-end I: download full CSVs from every venue (including ones I'm abandoning); label every self-transfer so incoming coins don't masquerade as income; reconcile staking totals to platform reports; and rebuild basis for any coin I'll sell into a 1099-DA venue, because transferred-in assets are the ones that show $0 basis. This one evening is the cheapest insurance against a CP2000. The 1099-DA reconciliation walkthrough is the procedure I follow.
9. Put next year's filing dates on the calendar now
Finally, while the year is fresh, I block the actual dates: US April 15, 2027 (extension is filing-only — the tax is still due April 15); UK January 31; Germany July 31 via ELSTER; Canada April 30 (June 15 filing for the self-employed, but payment stays April 30); Australia October 31; Japan's February 16–March 15 window; India July 31. The complete calendar with penalties is the 2027 deadlines guide. I put reminders thirty days ahead of each, because the only thing worse than paying tax is paying tax plus the late fee.
One evening now versus a horrible April
That's the whole ritual: one tally, one loss review per country, the expiring allowances, the clocks, the estimates, the smart doors, the income timing, the paperwork, the dates. Maybe two hours total for a normal portfolio.
Tax planning isn't about finding a clever trick at midnight on December 31. It's about doing boring, legal things while the calendar still lets you do them — and knowing which midnight your country actually keeps.
Open your portfolio, run the tally, and do the loss-and-allowance check this week while the dates are still weeks away. Which deadline governs you — December 31, April 5, March 31 or June 30? Tell me your country and I'll point you at the one move that matters most.
General information, not tax advice. H.R. 10357 had cleared House Ways and Means as of September 2026 but was not law; the wash-sale and basis provisions could change with little notice. Several 2026 figures are estimates pending final inflation adjustments. For large positions, business-status filers or cross-border years, work with a professional in your filing country.
FAQ
What is the deadline for crypto tax-loss harvesting in 2026?
For the US, Germany, Canada and Japan, losses must be realized by December 31, 2026 to count on the 2026 return. India's tax year ends March 31, the UK's ends April 5, and Australia's ends June 30, so their planning windows close on those dates instead. Settlement for direct crypto is effectively instant on most venues, but don't cut it to the final hours of December 31 — leave time for the trade to execute and the record to confirm. A paper loss in an unsold coin is not deductible anywhere.
Can I sell crypto at a loss and buy it back before the end of 2026?
In the US, yes for direct coins under current federal law — Section 1091 still applies to stocks and securities, not crypto — but H.R. 10357 would extend wash-sale treatment to digital assets on enactment with no announced grandfathering, so a December 2026 repurchase carries real risk if the bill becomes law. Do not apply the crypto rule to spot bitcoin ETF shares, which are securities and are already covered by the wash-sale rule. In the UK, buying back within 30 days triggers the bed-and-breakfast rules; Canada denies the loss on a 61-day window including purchases by your spouse; the ATO applies anti-avoidance rules to artificial sale-rebuy schemes. Germany and Japan have no formal repurchase rule, but German crypto losses are ring-fenced against other private-sale gains, and India gives losses no tax effect at all.
When does the UK tax year end for crypto capital gains?
The UK tax year runs from April 6 to April 5, so the real crypto planning deadline is April 5, not December 31. The £3,000 annual exempt amount is use-it-or-lose-it on that date (a couple can use £6,000 between them), and a loss you want to count for 2026/27 must be realized before April 6 with the 30-day bed-and-breakfast window factored in — if you want to sell at a loss and stay out of the position, the safe disposal date is in late February or earlier. Gains and losses are reported on the self-assessment return due the following January 31.
How do I use the US 0% long-term capital gains bracket with crypto?
For 2026, long-term capital gains that fall within the 0% bracket — up to roughly $49,450 of taxable income for single filers and about $98,900 for married filing jointly — are taxed at zero. You can realize appreciated coins held longer than a year up to that threshold before year-end and repurchase them without a wash-sale problem for direct crypto (though that freedom is legislatively at risk), which steps up your basis. Watch the cliffs above it: gains beyond the 0% band are taxed at 15%, the 3.8% NIIT starts at separate MAGI thresholds, and a big realization can raise Medicare IRMAA premiums and other income-linked benefits two years later.
Does crypto tax-loss harvesting work in India and Germany?
India: no. VDA losses cannot offset VDA gains, cannot offset other income and cannot be carried forward, so selling at a loss purely for tax reasons accomplishes nothing, and the sale itself creates a 1% TDS record. Germany: only in a narrow way — losses from private crypto sales under §23 EStG can offset gains from the same private-sale category in the same year, with no carryforward to other income; meanwhile the €1,000 annual private-sale allowance is a hard cliff. A more valuable German year-end move is often the opposite: delay selling until individual tranches pass their 365-day holding date, when the gain becomes exempt.
Written by
CryptoTaxCalc TeamA small team of crypto investors and tax researchers. Every guide is cross-checked against primary tax-authority sources (IRS, HMRC, BMF, CRA, ATO, NTA) before publication. About the team & all articles →