Online auctions are a powerful tool for UK charities, but the success of these events depends largely on the software used to run them. The right online auction platform can streamline the bidding process, engage supporters, and help your charity keep more of what it raises.
This guide covers the essential features to look for in online auction software, from mobile bidding and Gift Aid handling to UK payment processing and data protection. We also review the platforms UK charities are actually using, so you can choose the right tool for your next event.
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Online auction software is a digital tool for creating, managing, and running auctions. These platforms let charities host auctions where supporters can place bids on items or services from anywhere, and they automate many of the administrative tasks involved.
In the UK, a charity auction sits under the Fundraising Regulator's Code of Fundraising Practice. The Code was updated on 1 November 2025, with a new Section 9 covering online fundraising platforms specifically.
If you plan to run a prize draw or raffle alongside your auction, that is a separate matter. A raffle where tickets are sold in advance is a lottery under the Gambling Act 2005, and unless it is an incidental non-commercial lottery drawn entirely at the event (with no advance ticket sales), it must be registered with your local licensing authority as a small society lottery. Registration costs £40 initially and £20 per year. A single draw is capped at £20,000 in ticket sales. A silent or live auction is not a lottery and does not require Gambling Commission registration. (Gambling Commission, small society lotteries guidance)
Charities registered in Scotland must also register separately with OSCR, and Northern Ireland charities with CCNI.
Gift Aid is one of the most valuable tools available to UK charities, but it does not apply automatically to auction income, and getting this wrong risks an HMRC clawback.
The winning bid at fair value is not Gift Aid eligible. When a bidder wins a lot, they receive goods or services in return for their payment. That makes it a commercial transaction, not a charitable donation. (HMRC, donating to charity: Gift Aid)
A voluntary top-up above the lot value can be Gift Aid eligible. If the winning bidder adds a genuine additional donation at checkout, above the fair value of the lot, that top-up can attract Gift Aid, provided they sign a valid Gift Aid declaration (full name, home address, charity name, and confirmation they have paid enough UK Income or Capital Gains Tax to cover the claim). Higher-rate and additional-rate taxpayers can claim the difference through Self Assessment.
For edge cases, such as when a bidder knowingly overpays for a lot, the split-gift rules apply. The Charity Tax Group is the authoritative technical reference on benefit-limit rules for auction lots.
Online auction software helps charities raise more and spend less on running the event itself.
Zeffy is a completely free fundraising platform for charities. It offers auctions, event ticketing, membership management, and donor management tools, all under one roof, with no platform fee, no transaction fee, and no credit card fee, ever.
For a small UK charity currently paying Ticket Tailor for event tickets, Givergy or GalaBid for the silent auction, and JustGiving for the donate page, Zeffy consolidates that entire stack for free. Zeffy handles UK payments and gives you a Gift Aid declaration flow on any top-up donation your winning bidder adds at checkout.
Pricing:
Zeffy is completely free. When a donor completes a form, they have the option (but are never required) to leave a voluntary contribution to support Zeffy. Enough supporters do so to cover every platform cost, charities are never charged.
Features:
Givergy is a London-based mobile bidding platform built specifically for UK charity galas and fundraising dinners. It has won multiple awards for its technology and has a strong track record with UK gala organisers. Under its 'Keep it FREE' initiative, the platform is free for UK charities, with fees covered by a voluntary donor contribution at checkout.
What we like: Award-winning mobile bidding designed for the UK gala circuit. The donor-covered fee model is a direct response to the platform-fee complaints UK charities frequently raise, and it means your charity keeps the full winning bid amount. Givergy has genuine reference customers across UK schools, hospitals, and sports clubs.
Where it falls short for small UK charities: Givergy is primarily a live-event auction tool. If you also need a standalone donate page, event ticketing, membership management, or a supporter CRM, you will still need to stitch those together from other platforms. It is a strong tool for a single gala night; it is not an integrated fundraising stack.
Pricing: Free for UK charities under the 'Keep it FREE' initiative, with fees covered by an optional donor contribution. Verify the current terms directly at givergy.com/uk before committing.
GalaBid is a global silent-auction and mobile-bidding platform with over ten years of UK track record. It supports silent auctions, raffles, ticketing, and donations from a single platform, and is particularly strong at gala dinners and golf days. UK reference customers include schools, sports clubs, and hospitals.
What we like: A mature, well-tested platform with real UK experience. GalaBid handles multiple event types, silent auctions, live auctions, and fundraising thermometers, from one login. Its sister product CrowdComms covers event apps and virtual events if your gala has a hybrid component.
Where it falls short for small UK charities: GalaBid is built for event-centric fundraising. It is not a full fundraising stack, you will still need separate tools for year-round donation pages, membership management, and CRM. Pricing varies by tier; visit galabid.com/uk to confirm the current UK rate before committing. We do not quote a specific fee here because GalaBid pricing has changed in the past, and an incorrect figure is worse than no figure.
Choosing the right silent auction software matters for your event, and for staying on the right side of UK charity regulation. Here is what to check before you commit.
Cash is no longer the default at UK fundraising events. As one village hall trustee told us: 'People are not carrying around cash like they used to. They have no credit card transaction mechanisms.' For auction check-in and door sales, tap-to-pay matters.
Two practical options: Zeffy's mobile-optimised forms let supporters pay by card or digital wallet directly from their smartphone, with no additional hardware. GoodBox offers dedicated contactless donation devices (GBx terminals) designed for in-person giving at events, museums, and visitor attractions. The choice depends on whether you want hardware you purchase or rent, or a free software-only solution you run from a device you already own.

Running a successful charity auction does not have to mean paying a platform to do it.
With Zeffy, your charity can host a professional online or in-person auction, with mobile bidding, automatic outbid notifications, straightforward checkout, and a Gift Aid declaration flow for any top-up donation your winning bidders add. Zeffy also gives you donation forms, event ticketing, membership management, and supporter management tools in one place, all free.
No platform fee. No transaction fee. No credit card fee. Ever.
Preparing your auction is simpler than it looks. Set up your lots, add images and starting bids, customise your forms to match your charity's brand, and share the link or QR code with your supporters. Zeffy handles payments automatically when the auction closes, so you can focus on the event, not the admin.


A practical step-by-step guide to running a successful silent auction for a UK charity, covering fundraising goals, Gift Aid mechanics, venue licensing, item procurement, pricing, promotion, and post-event follow-up, with UK-specific legal and regulatory context throughout.


Twelve practical strategies for UK charities running silent, live or online auctions. Covers item curation, opening bid mechanics, Gift Aid on winning bids, UK platform comparison (Givergy, GalaBid, Zeffy), Gambling Act compliance when pairing a raffle, and the post-auction follow-up steps that convert one-time bidders into regular supporters. All fee examples in £. Zeffy is 100% free: no platform fee, no transaction fee, no card fee.
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