Taxmen have told their fellow countrymen that every donation they make to the local blood banks will allow them to wipe off their bill.
Donors have to get a certificate from the hospital for every litre donated that can then be sent to the taxman and written off against their final tax demand.
Regular donor Dariusz Gryka said: "I learnt about it from an accountant friend and started to give blood last year.
"I have only done it three times, but already it has been worth it."
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