JustGiving is set to make a hefty fee from fund
The fundraising page set up on the site by the Metropolitan Police Federation raised more than £600,000 within 24 hours of being set up.
This means that the site, which pocketed 5p on every pound donated, is likely to receive around £30,000 in administration fees.
Despite the site donating £10,000 to the fund when it was launched, it still means the company makes a hefty £20,000 profit.
The website has seen thousands of pounds donated for the family
So far, more than 30,000 people have donated to the appeal, leaving moving tributes to the policeman who was fatally stabbed in the ground of Parliament during the London attack on Wednesday.
One donor, who gave £30, wrote: “You gave your life serving your country and its people. I am one person in a sea of grateful individuals”.
Another, who gave £20, said simply: “Deepest sympathy”.
A third donor, who offered £10 to the fund, wrote: “Condolences”.
A spokesman for the Metropolitan Police Federation said that the organisation was "not happy" about the cash going to JustGiving instead of PC Palmer's family.
The federation is planning to ask a chief constable to write to JustGiving when the campaign has finished to ask for a further contribution to the fund.
He said: "The unfortunate thing is that they are a business and there is no other way of doing it other than asking people to go to bank and pay the money in over the counter."
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London mourns terror attack at vigil Fri, March 24, 2017
The world grieves after an attacker killed three people and injured about 40 near parliament in London.
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Floral tributes are left after the vigil in Trafalgar Square, London to remember those who lost their lives in the Westminster terrorist attack
A spokesman for JustGiving reportedly confirmed to The Telegraph that it would not be waiving the fee, pointing out, once again, that the website had contributed to the fund.
She said: “We are proud that in the face of terror, our community is mobilising to support those affected and those who have tragically lost their lives.
In a statement issued to Express.co.uk, a JustGiving said: “For the last 48 hours, we at JustGiving have been hard at work to help the crowdfunding page in aid of PC Keith Palmer’s family raise as much money as possible.
“There have been questions about the fact that JustGiving charges for its service.
Londoners turned out for vigil in Trafalgar Square
“We are honoured to be chosen to host millions of campaigns each year.
“All of these causes are deserving, and each pays a transparent 5 per cent fee which is fully reinvested in innovation to ensure that the next person in need who comes to JustGiving can raise more than on any other platform.
“In these exceptional circumstances where an attack has hit the city that we at JustGiving call home, we opted to join our community and give a donation of £10,000.
“PC Palmer’s tragic death has touched the whole nation and in fact the world, and we are proud to have played our part in enabling the nation’s moving and generous response in his memory.”
Lord Paddick, a Liberal Democrat peer who himself served as a Metropolitan Police officer for 21 years, added: "Bearing in mind the bravery of the officer – an unarmed man tackling a violent knifeman leaving a distraught family behind – surely JustGiving can in these exceptional circumstances waive their fee?"