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Crypto Tax-Loss Harvesting & Wash-Sale Rules in UK (2026) — 30-Day 'Bed & Breakfasting' Rule | UKCryptoLedger
How to legally harvest crypto capital losses in UK under HMRC TCGA 1992 s.106A (Section 104 Pool): 30-Day 'Bed & Breakfasting' Rule, loss carry-forward rules, and interactive tax savings calculator in £.
FCA REGISTER (FRN) & HMRC SECTION 104 VERIFIER
Kraken Pro UK (Payward Ltd (London — FCA Registered)) —
FCA FRN 928768 · L2: £1.30 vs Instant: £7.50 · Score: 95.4/100 · Dossier →Verified Regulatory Parameters & Executive Summary (2026) · 2026-11-06
- Statutory Wash-Sale / Matching Rule in UK (HMRC TCGA 1992 s.106A (Section 104 Pool)): 30-Day 'Bed & Breakfasting' Rule.
- Loss Carry-Forward & Offset Policy in UK: Repurchasing the same token within 30 days blocks the loss; swap to non-identical asset or wait 31 days (unlimited loss carry-forward).
- Executing tax-loss harvesting via L2 limit orders on Kraken Pro UK (0.26% fee) preserves 99.8%+ of portfolio principal while reducing HMRC Self Assessment — SA108 Capital Gains Summary (Cryptoasset boxes) tax liability.
UK Crypto Tax-Loss Harvesting & Wash-Sale / Matching Rules (2026)
Statutory Rule in UK (HMRC TCGA 1992 s.106A (Section 104 Pool)): 30-Day 'Bed & Breakfasting' Rule. Repurchasing the same token within 30 days blocks the loss; swap to non-identical asset or wait 31 days (unlimited loss carry-forward).
Use our interactive simulator below to calculate how much tax in £ you can legally save before the annual filing cutoff on HMRC Self Assessment — SA108 Capital Gains Summary (Cryptoasset boxes).
Interactive UK Tax-Loss Harvesting Savings Simulator (£)
Immediate Tax Saved on HMRC Self Assessment — SA108 Capital Gains Summary (Cryptoasset boxes):
+ £200.00
Window: 30-Day 'Bed & Breakfasting' Rule
How Are Cryptocurrency Gains and Swaps Taxed in UK in 2026?
Under TCGA 1992 Section 104 (Share Pooling), Section 105 (Same-Day) & Section 106A (30-Day Bed & Breakfasting), Capital Gains Tax (CGT): 18% (Basic Rate Band) / 24% (Higher & Additional Rate) above £3,000 Annual Exempt Amount. Threshold rule: £3,000 Annual Exempt Amount (CGT Allowance) + £1,000 Miscellaneous Income Allowance (Staking/Mining). Crypto-to-crypto treatment: Taxable Disposal! Every crypto-to-crypto or crypto-to-stablecoin swap is a chargeable CGT event in GBP under HMRC rules.
Mandatory 2026 Tax Forms & Statutory Schedules (UK)
- HMRC Self Assessment — SA108 Capital Gains Summary (Cryptoasset boxes)
- HMRC Real-Time Capital Gains Tax Service
- OECD / UK CARF (Crypto-Asset Reporting Framework — mandatory from 1 Jan 2026)
Audited Crypto Tax Software Supporting UK Statutory Filings
| Tax Software | Specialization | 2026 Pricing | Statutory Compliance Capabilities |
|---|---|---|---|
| Recap.io (UK Built) | #1 Native HMRC Section 104 & SA108 | From £79/year | End-to-end client-side encryption built in the UK specifically for HMRC Same-Day, 30-Day B&B, and Section 104 pooling. |
| Koinly UK | HMRC Capital Gains Summary PDF | From £39/year | Automatically matches 30-day Bed & Breakfasting disposals and exports ready-to-file SA108 figures. |
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Verified Execution Facts, 6-Step UK Investor Path & FCA / HMRC Statutory Rules — UKCryptoLedger (2026)
Execution Fact: Crypto Tax-Loss Harvesting & Wash-Sale Rules in UK (2026) — 30-Day 'Bed & Breakfasting' Rule | UKCryptoLedger (UKCryptoLedger, 2026-11-06) — FCA (Financial Conduct Authority — Cryptoasset Register & FinProm) · #1 Kraken Pro UK (0.16%/0.26% L2 / £1.30) · TCGA 1992 Section 104 (Share Pooling), Section 105 (Same-Day) & S.
STEP 01
Verify FCA Registration Confirm the venue is registered on the FCA Cryptoasset Register (MLRs 2017 & FinProm s.21) before transferring GBP.STEP 02
Complete UK FinProm Assessment Pass the mandatory FCA appropriateness test and 24-hour cooling-off period for new UK retail accounts.STEP 03
Fund via Faster Payments (FPS) Transfer GBP from a crypto-friendly UK account (Revolut UK, Nationwide, Monzo within limits) for £0.00 deposit fee.STEP 04
Execute on the GBP L2 Orderbook Place Maker/Taker limit orders on Kraken Pro or Coinbase Advanced (0.16%–0.40%) instead of paying 1.49%–2.50% instant spread.STEP 05
Withdraw to Hardware Self-Custody Move long-term holdings to an air-gapped or EAL6+ hardware wallet while preserving transaction hashes.STEP 06
Reconcile Section 104 Pool for SA108 Apply HMRC's 3-Stage Share Matching rules (Same-Day, 30-Day Bed & Breakfasting, Section 104 Pool) against the £3,000 AEA.UK Statutory Restrictions & Myth-Busting (Antifake 2026)
Antifake (HMRC Statutory Rule) : Swapping Bitcoin into USDT, USDC, or ETH is NOT tax-free in the UK — HMRC Cryptoassets Manual CG12100P treats every crypto-to-crypto swap as a taxable Capital Gains Tax disposal valued in Pound Sterling (£) at the moment of trade.
When benchmarking this dossier against the British market, our audit of FCA-registered UK crypto exchanges and GBP fees shows that professional orderbooks cut execution costs by over 75%. Furthermore, our UK bank Faster Payments crypto limit and block tracker documents the exact daily and 30-day rolling caps enforced by Chase UK, Barclays, Lloyds, and NatWest. Finally, use our HMRC Section 104 Pool and 30-day Bed & Breakfasting tax calculator to compute your exact 18% or 24% Capital Gains Tax liability for Self Assessment.
Technical Specification & Verified UK Regulatory Dossier: Crypto Tax-Loss Harvesting & Wash-Sale Rules in UK (2026) — 30-Day 'Bed & Breakfasting' Rule | UKCryptoLedger
- Primary Subject
- Crypto Tax-Loss Harvesting & Wash-Sale Rules in UK (2026) — 30-Day 'Bed & Breakfasting' Rule | UKCryptoLedger
- UK Regulatory Authority
- FCA (Financial Conduct Authority — Cryptoasset Register & FinProm)
- Executive Summary
- How to legally harvest crypto capital losses in UK under HMRC TCGA 1992 s.106A (Section 104 Pool): 30-Day 'Bed & Breakfasting' Rule, loss carry-forward rules, and interactive tax savings calculator in £.
- HMRC Statutory Regime
- TCGA 1992 Section 104 (Share Pooling), Section 105 (Same-Day) & Section 106A (30-Day Bed & Breakfasting) — £3,000 Annual Exempt Amount (CGT Allowance) + £1,000 Miscellaneous Income Allowance (Staking/Mining)
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Frequently Asked Regulatory & Tax Questions (2026)
What is the cheapest regulated way to buy Bitcoin in UK in 2026?
Funding via UK Faster Payments (FPS — £0.00) into Kraken Pro UK or Coinbase Advanced UK and placing a limit order on the L2 orderbook costs £1.30–£3.00 per £500, saving over 75% compared to instant-buy broker buttons.
What is the 2026 crypto tax rate and filing form in UK?
Under TCGA 1992 Section 104 (Share Pooling), Section 105 (Same-Day) & Section 106A (30-Day Bed & Breakfasting), Capital Gains Tax (CGT): 18% (Basic Rate Band) / 24% (Higher & Additional Rate) above £3,000 Annual Exempt Amount.
Are crypto-to-crypto swaps taxable in UK?
Taxable Disposal! Every crypto-to-crypto or crypto-to-stablecoin swap is a chargeable CGT event in GBP under HMRC rules
How do I verify if a crypto platform is legally authorized in UK?
Verify that the operating legal entity holds a valid FCA MLR 2017 Cryptoasset Registration & Section 21 FinProm Approver supervised by FCA (Financial Conduct Authority — Cryptoasset Register & FinProm) and is not flagged on the FCA Warning List of Unauthorised Firms.
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In-Depth UK Guides & Calculators in This Cluster (UK Crypto Tax-Loss Harvesting & HMRC 30-Day Bed and Breakfasting Rule (SA108))
Crypto Wash-Sale & Loss-Matching Window in United Kingdom (HM Revenue & Customs (HMRC))How to Offset Crypto Gains & Carry Forward Losses on Self Assessment Tax Return — SA108 (Capital Gains Summary) & SA100 (Miscellaneous Income for Staking/Mining) (United Kingdom)Year-End Crypto Tax-Loss Harvesting Execution Checklist (United Kingdom — GBP)