How to run an online charity auction (and when a live one raises more)

Run the numbers on almost any fundraising evening and the same pattern shows up: the money is concentrated in the room, in the moments when someone is driving the giving from the front. So why bother with an online charity auction at all? Because reach is the one thing a room cannot give you, and used well, an online auction adds it without costing you the live magic that raises the real money.

I have spent twenty years on stage at fundraising events, from village hall dinners to a Monaco gala that raised over €1,000,000 in a single evening. This is my honest guide to how an online charity auction works, when it earns its place, where it quietly leaks money, and how to combine online and live so the two lift each other rather than compete.

What is an online charity auction and how does it work?

An online charity auction is a fundraising auction where supporters bid through a website or app over a set period, rather than calling out offers to an auctioneer in a room. Lots are listed with photos, descriptions and a starting bid, and the highest offer when the auction closes wins. There is no live calling, so people can bid from home, from work, or from their seat at the event itself.

Three mechanics do the heavy lifting, and it helps to understand each before you choose a platform.

• Mobile bidding. Every lot lives on a page a guest opens on their phone. They tap to bid, see the current high offer, and can raise it in seconds. No paper sheets, no walking back to a table.
• Proxy or automatic bids. A bidder sets the most they are willing to pay, and the system bids on their behalf in small steps up to that ceiling. It means someone can go to bed and still win a lot at the lowest amount needed to beat the next person.
• A timed close. The auction ends at a fixed moment, often with an “anti-sniping” extension that adds a minute or two whenever a late bid lands, so nothing is stolen in the final second.

Put together, these let the auction run quietly for days without a person managing it. That is the appeal, and also the risk: an auction that runs itself also sells itself flatly, with none of the momentum a live room generates. More on that below.

A virtual charity auction and an online silent auction are, for practical purposes, the same thing: bidding over a window rather than live from a stage. If you want the deeper mechanics of pricing and closing, I have written a full guide to running silent auctions that applies whether the bids come in on paper, on a phone in the room, or online.

When does an online charity auction make sense?

An online charity auction makes sense whenever your supporters are spread out, short on time, or too numerous to fit in one room. It is a reach tool first and a fundraising tool second, and it shines in three specific situations.

Reach beyond the room. Your best donors are not all free on the night, and some live nowhere near the venue. An online auction lets the supporter in another city, or the one who sent apologies, still bid on a lot they love. Every extra bidder is money a room-only event would have left on the table.

Hybrid events. If you are running a gala anyway, an online layer lets people who cannot attend take part alongside those who can. Guests in the room bid on their phones, remote supporters bid from home, and both feed the same total. Done well, a hybrid event quietly widens your audience without changing the evening for the people actually there.

Pre-event bidding. This is the use I rate most. Open the online auction several days before the event, promote it hard, and let bids build before anyone walks through the door. By the time the evening starts, popular lots already have competitive bids and a bit of heat, which makes the live moments land harder. Momentum is a skill, not luck, and pre-event bidding is one of the few ways to manufacture some before the room has even gathered.

Where it makes less sense is as a full replacement for a live event. An online-only auction saves you a venue, but it also strips out the social proof, the shared energy and the person at the front turning a warm crowd into a generous one. That is precisely where the biggest gifts come from.

Online auction vs live auction: what are the trade-offs?

The trade-off is simple: an online auction buys you reach and convenience, and a live auction buys you momentum and the single largest gifts of the night. Neither is strictly better. They are good at different things, and the mistake is expecting one to do the other’s job.

Here is how they compare on the points that actually move your total.

• Reach. Online wins. It has no seating limit and no geography, so anyone with a phone can bid.
• Convenience. Online wins. It runs for days with little staffing and handles payment automatically at the close.
• Momentum. Live wins, and it is not close. A skilled auctioneer reads the room, names the energy, and builds a bidding war that a silent screen simply cannot.
• Emotional peak. Live wins. The pledge or fund-a-need, made to a room that is fully present, is where the biggest single jumps in the total happen.
• Cost of running. Online often looks cheaper, until you notice the commission most platforms take on everything raised. A live auctioneer’s fee is usually fixed and does not scale with your success.

I have set out the related comparison between live vs silent formats in more detail elsewhere, and most of it carries straight across to online, because an online auction is a silent auction with a wider door.

Which raises more, the screen or the room?

The room raises more, reliably, when you have a live auctioneer and a pledge in it. In my experience the concentrated, in-person moments out-earn a screen every time, because generosity is social and momentum is contagious in a way that a solitary tap on a phone never quite matches.

The reason is human, not technical. When one guest raises a paddle and the room reacts, others feel it and follow. A live pledge lets me make one emotional case to everyone at once, then invite the room to give at set levels while the feeling is still in the air. That shared moment is where a single evening can jump by tens of thousands of pounds, and no timed online close reproduces it.

Kevin selling a live auction lot at a fundraiser

None of that makes an online auction pointless. It makes it a supporting act. Use it to gather the bids a room could never reach, and to warm your best lots before the night, then let the live auction and the pledge do the heavy lifting when everyone is present and the energy is high. The online total and the live total are not rivals. They are two halves of the same result.

The commission trap most platforms will not mention

Here is the part I raise on almost every planning call, because it costs charities real money and almost nobody asks about it upfront. Most online auction platforms take a percentage of everything you raise. It is deducted quietly at the close, on top of the card processing fees, and it scales with your success, so the better your event does, the more the platform earns from it.

The word “free” does a lot of hiding in this market. There is usually no fee to sign up, which makes the platform feel free at the moment you choose it. Then the commission comes out of every winning bid, which is the moment it actually costs you, long after you have committed your event to it. On a £15,000 online auction, a five or six percent cut is around £900 gone before you have paid for anything else, and that money came straight from your donors’ generosity.

Two other things worth checking while you are at it:

• Who owns the donor data once the event ends. On many platforms it stays with them, not with your charity, which means you paid in commission to build a supporter list you may not actually keep.
• Whether the platform supplies its own lots with reserves set above true value, so a chunk of what bidders pay never reaches your cause.

This is why I point charities toward a commission-free silent auction software option built for your charity in its own branding, at 0% commission on what you raise. Every pound bid goes to your cause, you keep the donor data, and the platform stays live for three months after your event. I have explained exactly how that differs from the usual rented model in auction software explained. You should not hand a platform a slice of money your donors gave to your cause, not when you do not have to.

How do you combine online and live for the biggest total?

Combine them by using the online auction for reach and warm-up, and the live auction and pledge for the peak, then closing them in the right order so they never compete for the same wallet at the same moment. The two formats should hand off to each other, not fight.

The sequence I use for a hybrid event looks like this.

1. Open online several days early. List every lot, promote it to your whole supporter base, and let remote bidders and early birds build a bit of competitive heat before the night.
2. Keep mid-value lots online, hold the showstoppers back. Let the online auction carry the £50 to £500 items that would slow a live auction down. Save your best two or three lots for the microphone, where an auctioneer can build a proper bidding war.
3. Close the online lots before the live segment. When you gather the room, close the online auction so all the remaining energy and budget flows toward the live auction and the pledge, rather than being split across a phone screen and the stage at once.
4. Run the live auction and pledge as the peak. This is where the largest gifts land. The online auction has widened the door and warmed the crowd; now the room does what only a room can.
5. Capture Gift Aid on everything eligible. On qualifying donations and pledges you can reclaim an extra 25p for every £1 an eligible UK taxpayer gives, at no cost to them. On a £20,000 total that is up to £5,000 more for collecting the right details, online or in the room.

The point of the combination is that each format does what it is best at. Online reaches the people the room cannot hold, and warms the lots. The live auction and pledge convert a present, generous crowd at the peak of the evening. Try to make either one do the whole job and you leave money behind: online-only loses the momentum, live-only loses the reach.

Where to start

If you are weighing up an online charity auction, start with a clear split. Decide which lots go online for reach and early bidding, which two or three you hold back for the live stage, and how you will close the online auction before the live moments begin. Then check, before you sign anything, exactly what a platform takes from what you raise and who keeps the donor data afterwards.

An online auction is a genuinely useful tool for widening your audience, but the live auction and the pledge are still where your evening’s total is really won or lost. If you would like to talk through how the online and live parts fit together for your audience and your target, I offer a free initial consultation through my auctioneer services. Bring your number, and we will work out how to beat it.