Gifting or donating Bitcoin in Spain: taxes
For the donor (IRPF): Donation = deemed sale at market value. If BTC bought at €20,000 and donated when worth €60,000 → €40,000 capital gain even though no money received.
For the recipient (ISD — Donation Tax): Pays gift tax on market value received. Regional tax with variable bonifications. Direct family members often 99% bonified.
Recipient's acquisition cost: Market value at time of donation (same value that was taxed under ISD).
kointax records donations with correct market price and calculates donor's capital gain.