Free auction software exists, but “free” can mean very different things. A platform may charge nonprofits nothing while asking supporters for optional contributions, offer a limited free plan, waive fees for traditional auctions but charge for online bidding, or require no upfront payment while taking a percentage after the auction. Compare the complete cost, bidder experience, feature limits, payment processing, and support before choosing.For a nonprofit with a limited budget, the word free is appealing. But it does not always mean that every feature, payment, bidder, item, or auction is available without cost. It may describe only the software license, the initial setup, a small-event plan, or the amount charged directly to the nonprofit.
This guide explains the most common free-auction-software models, what supporters may see at checkout, which costs can still apply, and how current platforms such as BiddingOwl, Zeffy, Givebutter, BetterWorld, 32auctions, Auctria, and CharityAuctions structure their free or low-upfront options.
Disclosure: This article is published by BiddingOwl. BiddingOwl is one of the platforms discussed. No provider paid for inclusion. Pricing and functionality were checked against current official provider materials, but terms can change. Confirm current details and test the bidder experience before publishing an auction.
Yes, but the cost may be funded or limited in several different ways:
None of these models is automatically misleading or unsuitable. The important question is whether the organization understands how the provider is paid and whether that pricing model fits the complete auction workflow.
| Free model | How the provider is funded | What the nonprofit should check |
|---|---|---|
| Optional supporter contributions | Bidders or donors are invited to make a separate contribution to the software provider. | How the prompt is displayed, whether it can be changed or removed, and what happens when supporters decline. |
| Optional donor tips with a guarantee | Supporter tips fund the platform and may also cover payment-processing costs. | Which transaction types qualify, whether automatic winner charging changes the fee, and what happens if tips are disabled. |
| Limited free plan | The provider offers basic use for no annual or event fee and charges for higher limits or advanced tools. | Item, bidder, income, administrator, image, branding, messaging, payment, and support limits. |
| Free traditional tools with online performance pricing | The organization can use paper, live, ticketing, or donation tools at no platform charge, while online/mobile winning bids carry a fee. | Which transactions are subject to the percentage and whether payment processing is separate. |
| Zero-upfront or pay-as-you-raise pricing | The organization pays nothing to begin but owes a percentage after funds are raised. | The percentage, what “funds raised” includes, and whether processing fees are additional. |
| Free software with separate processing | The auction platform charges no software fee, but the organization pays its card processor. | The percentage, fixed transaction charge, refund treatment, deposit timing, and supported payment methods. |
| Platform | Why it may be described as free | What may still cost money or affect the supporter | Important condition or limit |
|---|---|---|---|
| Zeffy | No platform or payment-processing fees for eligible nonprofit organizations | Supporters are invited to make an optional contribution to Zeffy | Eligibility requirements apply; auction forms currently allow up to 200 items |
| Givebutter | 0% platform and processing fees when optional tips are enabled under its guarantee | Tips appear at checkout; disabling tips or using automatic/manual winner charging can trigger a 3% platform fee plus processing | Auction payment configuration changes the final cost |
| BetterWorld | Free Forever plan includes the full software without feature limitations | Supporters see an optional contribution prompt; Stripe processing applies and can be presented to supporters | Removing the contribution prompt under Flex creates a 5% fee on auctions and most non-donation campaigns |
| 32auctions | Free base auction with unlimited bidders and up to 20 items | Paid upgrades can remove house ads, increase limits, add branding, text alerts, images, payments, and other tools | The free plan is best suited to a small, straightforward online auction |
| Auctria | Explorer annual license is free | Integrated credit-card use adds Auctria’s 1% fee plus the processor’s charges | Maximum $10,000 in recorded annual income, 250 bidders per event, and three team members |
| BiddingOwl | Traditional silent/live tools, paper bid sheets, tickets, and donations have no platform fee | Winning online/mobile bids carry a 5% performance fee; Stripe or PayPal processing is separate | The cost depends on how much bidding occurs online or by mobile |
| CharityAuctions | Organizations can create an account and begin with no upfront software payment | Nothing Out of Pocket pricing is 5% of funds raised; Prepay and Save is $499 plus 3%; payment processing is separate | “No upfront cost” is not the same as free; custom 0% pricing is also available |
Pricing, limits, and payment workflows were reverified against current official provider materials on September 19, 2026. Provider terms change frequently. Confirm current information directly with the platform before making a final decision.
Zeffy describes its fundraising technology as 100% free for eligible nonprofits. The nonprofit receives the full intended payment, and Zeffy covers payment-processing costs.
Zeffy funds the platform by inviting supporters to make an optional contribution to Zeffy during checkout. The contribution is separate from the amount intended for the nonprofit. Zeffy states that supporters can decline the contribution and that the nonprofit still receives the full intended amount.
Best fit: Eligible nonprofits seeking a genuinely zero-fee online auction and broader fundraising platform and that are comfortable with an optional Zeffy contribution at checkout.
For a detailed auction-workflow comparison, read BiddingOwl vs. Zeffy.
Givebutter offers auctions as part of a broader fundraising and donor-engagement platform.
Its current pricing states that nonprofits pay 0% platform fees when optional tips are enabled. Givebutter’s guarantee also covers processing fees when tips are enabled for qualifying transactions.
The auction configuration matters:
Givebutter currently publishes standard card processing at 2.9% plus $0.30 when processing fees apply. Legacy pricing may differ.
Best fit: Organizations wanting auctions inside a broad, modern fundraising platform and willing to select the payment and tip settings carefully.
For a detailed comparison of Givebutter’s broader fundraising suite and BiddingOwl’s auction-centered workflows, read BiddingOwl vs. Givebutter.
BetterWorld places accounts on its Free Forever plan by default. The company states that the free plan includes all platform features rather than reserving advanced functions for a paid tier.
The plan is supported through suggested but optional supporter contributions on winning bids, tickets, and other transactions. Supporters can decline the contribution.
Best fit: Nonprofits seeking a broad fundraising suite and comfortable allowing an optional BetterWorld contribution prompt.
Before choosing the Free Forever or Flex model, compare BiddingOwl vs. BetterWorld using the same auction revenue, payment mix, and checkout workflow.
32auctions offers a free base online silent auction rather than a supporter-tip model.
The free auction includes house advertising. Paid upgrades can increase item and image limits, remove ads, add branding, enable text messages, expand insights, support payments and donations, and add other functions. The provider currently describes its popular upgrade package as approximately $170 per event.
Best fit: Clubs, teams, schools, and small nonprofits running a simple auction with 20 or fewer items.
Auctria offers a free Explorer license for organizations operating below its published annual-income limit.
Best fit: A small organization conducting an auction under the published annual-income and bidder limits and willing to learn a detailed event-management system.
Because Auctria and BiddingOwl calculate costs in very different ways, comparing their headline percentages alone can be misleading. See our BiddingOwl vs. Auctria comparison for worked pricing examples based on online bids, tickets, donations, paper/live bidding, and total event revenue.
BiddingOwl uses a different definition of free. It does not charge a platform fee for traditional silent and live auction organization, item preview pages, printable bid sheets, ticket sales, donations, Fund-a-Need, and paddle raises.
A 5% performance fee applies to winning online and mobile bids. For an online item with a $100 winning bid, the BiddingOwl fee is $5. Stripe or PayPal processing costs are separate.
The 5% fee applies to items that receive their winning bids through online or mobile bidding. If the event uses online pre-bidding before a live auction, the fee is based on the online pre-bid amount rather than the final in-room price under the current published terms.
Best fit: Organizations wanting flexible paper, live, mobile, online, and hybrid auction workflows without committing to an annual license.
For a school-specific planning checklist, see our guide to silent auction software for schools and PTOs.
Review BiddingOwl pricing, payment integrations, and the silent auction fees guide.
CharityAuctions allows organizations to create an account and begin without an upfront software payment, but its current pricing is performance-based rather than free after fundraising succeeds.
CharityAuctions currently publishes three pricing paths:
Card-processing costs are separate from the platform success fee.
This is a useful example of why organizations must distinguish among:
Only the last description means the platform itself remains free after a successful auction.
CharityAuctions also states that it no longer uses the former optional-tip checkout model.
Best fit: Organizations that value starting without an upfront software payment and are comfortable paying a success percentage after fundraising, or organizations that prefer to prepay in exchange for a lower percentage.
See CharityAuctions pricing and its current plan explanation for current terms.
Card payments generally involve a percentage of the transaction and sometimes a fixed amount. The processor may be Stripe, PayPal, or a provider selected by the auction platform.
Ask:
A tip or supporter contribution does not reduce the nonprofit’s proceeds when the provider’s model works as described, but it does increase the amount the supporter may choose to pay.
Review:
A performance fee may apply to:
The percentage is meaningful only when you know the amount to which it applies.
A free plan may restrict:
Other costs may include:
The examples below show platform pricing only unless otherwise noted. They are not complete cost estimates because payment-processing charges and supporter contributions depend on the provider and transaction mix.
| Example model | Illustrative platform amount on $10,000 | Important qualification |
|---|---|---|
| Zeffy | $0 charged to the eligible nonprofit | Supporters see an optional Zeffy contribution; Zeffy covers processing |
| Givebutter with qualifying optional-tip payment request | $0 platform fee | Auto-charge, manual charging, or disabled tips can create a 3% platform fee plus processing |
| BetterWorld Free Forever | $0 platform fee | Optional BetterWorld contribution appears; Stripe processing still applies |
| 32auctions free base | $0 software fee | Only 20 items and basic features; payment and upgrades can add cost |
| Auctria Explorer | $0 annual license | $10,000 is the annual recorded-income ceiling; integrated card use adds 1% plus processing |
| BiddingOwl online/mobile bids | $500 | 5% applies to winning online/mobile bids; traditional tools are free and processing is separate |
| CharityAuctions Nothing Out of Pocket | $500 | 5% of funds raised; no upfront software payment; payment processing is separate |
To calculate the full cost, use:
Upfront or subscription fee + platform or performance fee + payment-processing fees + fixed transaction charges + required add-ons = estimated provider cost
Then separately document any optional or required amount shown to bidders or donors.
Choose the statement that best reflects your priority:
These are different requirements and lead to different platforms.
See BiddingOwl Alternatives for additional comparisons by pricing model and workflow.
Document whether the event will use:
For each provider, use the same:
Run a test transaction and note:
Do not wait until the auction is live to discover that the free plan lacks needed items, images, administrators, text messages, imports, branding, payments, or support.
For a broader feature-selection process, use the Auction Software for Nonprofits buyer’s guide.
For detailed vendor profiles, see Best Silent Auction Platforms for Nonprofits.
BiddingOwl does not charge a platform fee for traditional silent and live auction administration, printable bid sheets, item preview pages, tickets, donations, Fund-a-Need, and paddle raises.
It charges 5% of winning online and mobile bids. Stripe or PayPal processing fees may also apply.
See BiddingOwl Pricing for current details.
Zeffy states that eligible nonprofits pay no platform or payment-processing fees and receive the full intended payment.
Zeffy funds the service through optional contributions from supporters at checkout.
Some platforms invite bidders to make an optional contribution or tip.
Others allow the nonprofit to add or pass along a buyer’s premium, service fee, platform fee, or processing charge.
Review the checkout page and distinguish optional amounts from required charges.
Sometimes.
Zeffy covers processing for eligible nonprofit transactions. Givebutter’s guarantee can cover qualifying transactions when tips are enabled.
BetterWorld, BiddingOwl, Auctria, 32auctions, CharityAuctions, and other platforms may use separate processors or pricing arrangements.
Confirm the exact rate and workflow.
32auctions offers a free base auction with up to 20 items and unlimited bidders.
Other platforms may also work, but compare branding, payments, notifications, reporting, and support before choosing solely on item count.
The answer depends on what hybrid means.
If the organization needs paper bid sheets, online pre-bidding, mobile bidding, manual winner entry, cash, checks, and direct support, BiddingOwl may be a stronger fit than a platform focused only on online forms.
Other providers may support different hybrid combinations.
See How to Run a Hybrid Silent Auction for more on planning mixed in-person and online workflows.
Some platforms can.
Zeffy’s standard card-auction workflow automatically processes winning payments after closing.
Givebutter offers auto-charge, but its current terms apply a 3% platform fee plus processing to those transactions.
BiddingOwl organizations using Stripe can optionally enable card vaulting while retaining administrator control over when an applicable saved card is charged.
See Should You Require a Credit Card Before Bidding? for more about card-before-bidding workflows.
A donor tip or provider contribution supports the software company.
A buyer’s premium or service fee is generally configured by the nonprofit and added to the bidder’s purchase to offset auction or payment costs.
The recipient and purpose of the charge should be clearly disclosed.
See Silent Auction Fees and Buyer's Premiums Explained for examples.
Some platforms allow offline bids or payments to be recorded.
BiddingOwl allows cash and check invoices to be marked paid. Zeffy supports offline and cash bid options. Auctria can record payments handled outside its integrated processor. CharityAuctions also states that cash or check payments can be collected offline.
Verify how offline transactions appear in reports.
The answer depends on eligibility, supporter-contribution settings, auction size, payment workflow, item limits, and required features.
A platform charging $0 to the nonprofit may ask supporters for optional contributions.
A free limited plan may require upgrades.
A percentage platform may cost more as revenue grows but reduce upfront risk.
The most useful comparison is the complete expected cost of your actual event—not the provider's headline price.
Free auction software is not one category.
It includes genuinely zero-fee nonprofit models, supporter-funded platforms, limited free plans, free traditional tools, and zero-upfront performance pricing.
Before choosing, identify:
The best free option is not necessarily the platform with the lowest advertised price.
It is the platform whose complete cost and workflow are clear before the first bidder registers.
Compare platforms in our 2026 Best Silent Auction Platforms guide, use our Auction Software for Nonprofits buyer’s guide, and review our Silent Auction Fees guide.
To explore BiddingOwl, review features, pricing, customer support, and credit card processing for nonprofits.
For this guide, we evaluated auction platforms specifically through the lens of what “free” means for a nonprofit organization.
We reviewed platform or subscription fees, payment-processing costs, supporter contributions or tips, auction and bidder limits, available auction formats, payment workflows, feature restrictions, support, and situations that may require a paid upgrade.
Pricing, limits, payment workflows, and feature information were reverified using current official provider websites and documentation on September 19, 2026. Because software pricing and features can change, organizations should confirm current terms directly with each provider before selecting a platform.
Pricing, limits, and workflow details were last verified on September 19, 2026, using current official materials from:
For CharityAuctions specifically, we also reviewed its current plan explanation.
Product terms may change. Readers should confirm current information directly with each provider before making a final decision.
Adie M. is a skilled writer with a strong background in marketing. She is dedicated to creating compelling content for the nonprofit sector. She holds a Postgraduate Diploma in Management, specializing in Marketing, and a Bachelor's degree in Environmental and Geographical Science and Psychology from the University of Cape Town. With experience in digital marketing, Adie combines her technical expertise with a passion for impactful storytelling. She is committed to using her writing skills to support nonprofit organizations and drive positive change.
Mo-Fri 9 am to 5 pm Eastern Time
24/7 critical emergency support
All currencies supported
