Coinbase Example Report

ASSESSMENT SUMMARY15 Sep 2024 – 25 Mar 2025Tax year2024/25

Total Capital Gain

£2,470.24

Gains split by 30 Oct 2024 rate change

6 Apr – 29 Oct 2024 (10% / 20%)£663.60

30 Oct 2024 – 5 Apr 2025 (18% / 24%)£1,806.64

past yearUK Resident (full year)All bands

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Asset class	Proceeds	Costs	Gain
Cryptoassets	£11,790.00	£9,319.76	£2,470.24
Total	£11,790.00	£9,319.76	£2,470.24

SELF ASSESSMENT GUIDE

2024/25: CGT rates rose on 30 October 2024 (10%/20% → 18%/24%), so HMRC taxes the year with an adjustment. Report your total gains on the SA108 as usual, then use HMRC’s adjustment calculator for box 51 (“Adjustments to Capital Gains Tax”).

Cryptoassets

Box	What to enter	Figure
13.1	Number of disposals	8
13.2	Disposal proceeds	£11,790
13.3	Allowable costs	£9,320
13.4	Gains in the year, before losses	£2,470
13.5	Losses in the year	£0

Losses and adjustments

Box	What to enter	Figure
45	Losses brought forward & used in-year	enter manual
47	Losses available to carry forward	£0

SA100 UK Income

Box	What to enter	Figure
SA100	Dividends from UK companies	£0.00
SA100	UK interest	£0.00

SA100 Other UK Income

Box	What to enter	Figure
17	Other taxable income	£54.00

CRYPTO DISPOSALS

HMRC Matching Rules Applied

Same Day

—

Bed & Breakfast

0.5 units

£1,200.00

Section 104 Pool

235.59 units

£8,119.76

8 disposals · 5 tickers · £15.00 fees


ETH	Coinbase	2024-09-15	B&B	0.5	£1,698.00	£1,200.00	£498.00
Sell: 0.5 × £3,396 = £1,698.00net of £2.00 feesCost: 0.5 × £2,400 = £1,200.00Result: £1,698.00 − £1,200.00 = £498.00
BTC	Coinbase	2024-10-10	S104	0.02	£1,200.00	£1,034.40	£165.60
Sell: 0.02 × £60,000 = £1,200.00Cost: 0.02 × £51,720 = £1,034.40incl. £1.07 feesResult: £1,200.00 − £1,034.40 = £165.60
BTC	Coinbase	2024-11-20	S104	0.04	£2,597.00	£2,068.80	£528.20
Sell: 0.04 × £64,925 = £2,597.00net of £3.00 feesCost: 0.04 × £51,720 = £2,068.80incl. £2.13 feesResult: £2,597.00 − £2,068.80 = £528.20
SOL	Coinbase	2025-01-10	S104	10	£1,797.00	£1,502.50	£294.50
Sell: 10 × £179.70 = £1,797.00net of £3.00 feesCost: 10 × £150.25 = £1,502.50incl. £2.50 feesResult: £1,797.00 − £1,502.50 = £294.50
LINK	Coinbase	2025-02-25	S104	25	£373.00	£301.00	£72.00
Sell: 25 × £14.92 = £373.00net of £2.00 feesCost: 25 × £12.04 = £301.00incl. £1.00 feesResult: £373.00 − £301.00 = £72.00
BTC	Coinbase	2025-03-10	S104	0.03	£2,158.00	£1,635.76	£522.24
Sell: 0.03 × £71,933.3333 = £2,158.00net of £2.00 feesCost: 0.03 × £54,525.3333 = £1,635.76incl. £2.13 feesResult: £2,158.00 − £1,635.76 = £522.24
ADA	Coinbase	2025-03-20	S104	200	£169.00	£141.00	£28.00
Sell: 200 × £0.845 = £169.00net of £1.00 feesCost: 200 × £0.705 = £141.00incl. £1.00 feesResult: £169.00 − £141.00 = £28.00
ETH	Coinbase	2025-03-25	S104	0.5	£1,798.00	£1,436.30	£361.70
Sell: 0.5 × £3,596 = £1,798.00net of £2.00 feesCost: 0.5 × £2,872.60 = £1,436.30incl. £1.98 feesResult: £1,798.00 − £1,436.30 = £361.70
					£11,790.00	£9,319.76	£2,470.24

PORTFOLIO HOLDINGSAll years

Crypto Positions

Total Cost Basis

£9,089.24

Crypto Holdings

BTC

48.0%

2025-03-10

0.08

£4,362.04

£54,525.45

Date	Type	Qty Change	Cost Change	Explanation
2024-05-10	BUY	+0.1	+£5,005.00	Buy 0.1 BTC at 2024-05-10
2024-07-01	BUY	+0.05 (0.1 → 0.15)	+£2,753.00£5,005.00 → £7,758.00	Buy 0.05 BTC at 2024-07-01
2024-10-10	SELL	-0.02 (0.15 → 0.13)	-£1,034.40£7,758.00 → £6,723.60	Sold 0.02 BTC at average cost
2024-11-20	SELL	-0.04 (0.13 → 0.09)	-£2,068.80£6,723.60 → £4,654.80	Sold 0.04 BTC at average cost
2025-01-25	BUY	+0.02 (0.09 → 0.11)	+£1,343.00£4,654.80 → £5,997.80	Add 0.02 BTC to pool
2025-03-10	SELL	-0.03 (0.11 → 0.08)	-£1,635.76£5,997.80 → £4,362.04	Sold 0.03 BTC at average cost

ETH

32.1%

2025-03-25

1.015

£2,915.70

£2,872.61

Date	Type	Qty Change	Cost Change	Explanation
2024-06-05	BUY	+1	+£2,803.00	Buy 1.0 ETH at 2024-06-05
2024-06-25	BUY	+0.5 (1 → 1.5)	+£1,503.00£2,803.00 → £4,306.00	Buy 0.5 ETH at 2024-06-25
2024-07-20	BUY	+0.01 (1.5 → 1.51)	+£30.00£4,306.00 → £4,336.00	StakingReward 0.01 ETH at 2024-07-20
2025-02-15	BUY	+0.005 (1.51 → 1.515)	+£16.00£4,336.00 → £4,352.00	Add 0.005 ETH to pool
2025-03-25	SELL	-0.5 (1.515 → 1.015)	-£1,436.30£4,352.00 → £2,915.70	Sold 0.5 ETH at average cost

SOL

16.5%

2025-01-10

£1,502.50

£150.25

Date	Type	Qty Change	Cost Change	Explanation
2024-08-10	BUY	+20	+£3,005.00	Buy 20 SOL at 2024-08-10
2025-01-10	SELL	-10 (20 → 10)	-£1,502.50£3,005.00 → £1,502.50	Sold 10 SOL at average cost

LINK

3.3%

2025-02-25

£301.00

£12.04

Date	Type	Qty Change	Cost Change	Explanation
2024-12-20	BUY	+50	+£602.00	Buy 50 LINK at 2024-12-20
2025-02-25	SELL	-25 (50 → 25)	-£301.00£602.00 → £301.00	Sold 25 LINK at average cost

USDC

<0.1%

2024-09-01

£8.00

£0.80

Date	Type	Qty Change	Cost Change	Explanation
2024-09-01	BUY	+10	+£8.00	Add 10 USDC to pool

ALGO

0.0%

2024-12-05

£0.00

Date	Type	Qty Change	Cost Change	Explanation
2024-12-05	BUY	+10	+£0.00	Add 10 ALGO to pool

56.095

£9,089.24

INCOME SUMMARY

Total Reportable Income

£54.00

Dividends

£0.00

Interest

£0.00

Other Income

£54.00

Other income

SA100 box 17. HMRC reference

Total Other Income

£54.00

Asset	Date	Type	Amount
ETH	2024-07-20	Staking	£30.00
USDC	2024-09-01	Staking	£8.00
ETH	2025-02-15	Staking	£16.00

Tax by Income Band

Estimated tax based on UK income tax bands. Your actual liability depends on your total income. HMRC rates

Basic Rate

Other 20%: £10.80

Higher Rate

Other 40%: £21.60

Additional Rate

Other 45%: £24.30

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Reference calculations, not tax advice — check the figures before you file.