To close this topic, let's calculate this bitcointalker user's net worth today with a BTC value of
€94,834.23 (coingecko today)
Borrowed amount: €50,000
Interest rate: 1.5% per year
Loan term: 5 years (from 11/19/2017 to 11/19/2022)
Current date: 26/05/2025
Purchase of Bitcoins on 19/11/2017
Taxation: The man is probably a French tax resident, French tax rules for capital gains on cryptocurrencies : flat tax of 30% on capital gains.
To calculate the cost of the loan, I used an online calculator (see link).
He would have had to pay
€865/month, and his loan would have cost him only €1,930 in total.
https://www.meilleurtaux.com/credit-immobilier/simulation-de-pret-immobilier/calcul-des-mensualites.htmlBitcoin price on 19/11/2017: ~€6,800
Number of bitcoins purchased: 50,000 ÷ 6,800 ≈ 7.3529 bitcoins
Bitcoin price on 26/05/2025: €94,834.23 (coingecko)
For a €50,000 loan over 5 years (60 months) with monthly payments of €865: Total amount repaid: 865 × 60 =
€51,900Interest cost: 51,900 − 50,000 =
€1,900This is very close to the interest cost indicated (€1,930). The slight difference may be due to rounding or additional fees in the chosen calculator. For consistency, I will use the total interest cost of €1,930, resulting in a total loan cost of
€51,930.
Bitcoin value as of 26/05/2025 : Number of bitcoins × Bitcoin price =
7.3529 × 94,834.23 ≈ €697,058.82Gross assets = Value of bitcoins − Total cost of loan = 697,058.82 − 51,930 =
€645,128.82In France, to calculate the capital gains tax on cryptocurrencies, the acquisition price (amount invested, here €50,000) is subtracted from the sale price (value of the bitcoins at the time of sale, here €697,058.82).Capital gains tax:Tax = 647,058.82 × 30% =
€194,117.65Net assets = Gross assets − Tax = 645,128.82 − 194,117.65 =
€451,011.17France : If the man opts for the progressive income tax scale, the tax could vary according to his marginal tax bracket.
We can remove the purchase costs, loan administration fees and other costs, but roughly speaking it would have made a capital gain of
768%.
Bitcoin was, at least, a good investment in the past, probably no more dangerous than stocks and, for the time being, much more profitable.
Of course, with its volatility, it can be scary, and many investors have sold in panics over the period.
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Moral: Everyone should be able to invest based on theirs own circumstances, not their neighbor's. An investor should also be able to obtain information from multiple sources.