Free Auction Software for Nonprofits: What “Free” Really Costs

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, Auctria, and 32auctions structure their free or low-upfront options.

Is there really free auction software for nonprofits?

Yes, but the cost may be funded or limited in several different ways:

• The platform may ask bidders or donors for an optional contribution or tip.
• The provider may absorb processing costs when supporter tips are enabled.
• The free plan may limit auction income, items, bidders, administrators, images, branding, or communications.
• The organization may pay nothing upfront but owe a percentage of winning bids or funds raised.
• Traditional paper or live-auction tools may be free while online and mobile bidding carries a performance fee.
• The software may be free while Stripe, PayPal, or another payment processor still charges transaction fees.
• Advanced support, onboarding, text messages, imports, equipment, or integrations may cost extra.

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.

What does “free auction software” mean?

Free auction software options at a glance

Pricing and limits were last verified on August 6, 2026. Provider terms change frequently. Confirm current information directly with the platform.

1. Zeffy: no nonprofit platform or processing fees

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.

What is included in Zeffy’s current auction workflow?

• Online auction forms
• Up to 50 items per auction form
• Starting bids and minimum increments
• Maximum or automatic bidding
• Automatic outbid notifications
• Anti-sniping time extensions
• Automatic processing of winning card payments
• Cash and offline bid options
• Donations, tickets, raffles, memberships, peer-to-peer fundraising, and contact-management tools

What should a nonprofit consider?

• The supporter-contribution language and suggested amount are controlled by Zeffy.
• The contribution supports Zeffy rather than the nonprofit.
• Winning card payments are generally processed automatically after the auction closes.
• The current item limit matters for larger auctions.
• Eligibility and country requirements apply.
• The official auction documentation reviewed for this guide does not describe a dedicated printable paper bid-sheet generator.

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.

2. Givebutter: free with optional tips, with auction exceptions

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.

When can auction fees apply?

The auction configuration matters:

• When optional tips are enabled and winners receive a payment request, the platform fee can be 0%.
• When tips are disabled, a 3% platform fee applies, plus standard processing fees.
• When the organization automatically charges winning cards, a 3% platform fee applies, plus processing.
• When an administrator manually charges a winner from the dashboard, a 3% platform fee applies.

Givebutter currently publishes standard card processing at 2.9% plus $0.30 when processing fees apply. Legacy pricing may differ.

What should a nonprofit consider?

• The meaning of “free” changes according to the selected payment workflow.
• Automatic winner charging is convenient but is not a zero-platform-fee transaction.
• Optional tips appear in the supporter experience.
• The broader platform includes fundraising pages, CRM, events, email, peer-to-peer tools, and auctions.

Best fit: Organizations wanting auctions inside a broad, modern fundraising platform and willing to select the payment and tip settings carefully.

3. BetterWorld: free software funded by optional contributions

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.

What costs can still apply?

• Stripe currently charges 2.9% plus $0.30 for credit-card transactions.
• Supporters can be invited to cover transaction fees.
• The Flex plan removes the provider-contribution prompt and charges 5% on auctions and most campaign types other than standard donation forms.
• Annual Partner and Keystone plans combine a membership fee with a smaller transaction percentage.

What should a nonprofit consider?

• The free plan is not feature-limited, but the supporter contribution is part of checkout.
• Removing that prompt changes the cost substantially.
• Payment processing is not automatically eliminated under the free plan.
• The platform covers auctions, events, donations, raffles, paddle raises, and other campaigns.

Best fit: Nonprofits seeking a broad fundraising suite and comfortable allowing an optional BetterWorld contribution prompt.

4. 32auctions: a free limited plan for small auctions

32auctions offers a free base online silent auction rather than a supporter-tip model.

What the free base plan currently includes

• Up to 20 auction items
• Unlimited bidders
• One image per item
• A custom auction URL
• Mobile bidding
• Proxy and Buy Now bidding
• Outbid email notifications
• Basic donor and sponsor promotion
• Email support

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.

What should a nonprofit consider?

• The 20-item limit may be too small for many school, gala, or community auctions.
• The organization may need paid upgrades for branding, more images, text alerts, or online payments.
• It is focused primarily on straightforward online silent auctions rather than a broad live-event suite.

Best fit: Clubs, teams, schools, and small nonprofits running a simple auction with 20 or fewer items.

5. Auctria Explorer: a free annual plan with revenue and user limits

Auctria offers a free Explorer license for organizations operating below its published annual-income limit.

What Explorer currently includes

• Unlimited events and items
• Online and mobile bidding
• Silent and live auctions
• Ticket and sponsorship sales
• Donations and paddle raises
• Customizable event website
• Up to 250 bidders per event
• Three team members
• Chat and email support

What are the limits and costs?

• The free plan permits up to $10,000 in total annual income recorded in Auctria.
• If recorded income exceeds the limit, the system can stop accepting bids, donations, and purchases until the organization upgrades or reduces the recorded total.
• Integrated credit-card use carries an additional 1% Auctria fee plus the processor’s fee.
• Data import, texting, custom email, more administrators, and other capabilities require a paid plan.

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.

6. BiddingOwl: free traditional tools with online performance pricing

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.

What can be used without the 5% performance fee?

• Traditional silent-auction administration
• Live-auction administration
• Printable bid sheets
• Item preview pages
• Admission tickets
• Direct donations
• Fund-a-Need
• Paddle raises

When does the performance fee apply?

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.

What should a nonprofit consider?

• The total cost depends on how much winning-bid revenue occurs online.
• The organization manages its own Stripe or PayPal account.
• Card-processing fees remain separate.
• Cash and check payments can be collected outside the integration and marked paid.
• BiddingOwl may cost nothing for a fully traditional event but is not a zero-fee online-auction platform.

Best fit: Organizations wanting flexible paper, live, mobile, online, and hybrid auction workflows without committing to an annual license.

Review BiddingOwl pricing, payment integrations, and the silent auction fees guide.

7. CharityAuctions: no upfront payment is not the same as free

CharityAuctions allows organizations to create a workspace without a credit card and offers a pay-as-you-raise option with no upfront platform payment.

Its current Starter plan charges 8% of funds raised. Its Pro plan charges a $499 setup fee plus 3% of funds raised. Live-event pricing requires a custom quote.

This is a useful example of why organizations must distinguish among:

• Free to create an account
• Free to build or test an auction
• No upfront payment
• No fee if the auction does not run
• No platform fee after money is raised

Only the last description means the platform itself is free after a successful auction.

Best fit: Organizations that value starting without an upfront commitment and are comfortable paying a performance percentage after fundraising.

What fees can still apply to free auction software?

Payment-processing fees

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:

• Is processing included in the free model?
• Does the provider absorb any fee supporters do not cover?
• Does automatic winner charging change the rate?
• Are ACH, wallets, and international cards priced differently?
• Who pays when a transaction is refunded?

Bidder or donor contributions

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:

• Who receives the contribution
• Whether it is separate from the nonprofit’s donation or winning bid
• Whether the supporter can change or remove it
• Whether the nonprofit can customize the prompt
• Whether removing the prompt creates a platform fee

Performance fees

A performance fee may apply to:

• Winning online bids
• All winning bids
• Total funds raised
• All processed payments
• Specific campaign types

The percentage is meaningful only when you know the amount to which it applies.

Feature and capacity limits

A free plan may restrict:

• Items
• Bidders
• Administrators
• Annual recorded income
• Images per item
• Custom branding
• Text messages
• Data imports and exports
• Automatic bidding
• Online payments
• Support channels

Add-on and event costs

Other costs may include:

• Text-message packages
• Onboarding or assisted setup
• Event-night support
• Card readers or devices
• Streaming
• White-label branding
• Advanced reporting
• CRM or accounting integrations
• Data migration

How much could “free” auction software cost on a $10,000 auction?

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.

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.

How to choose free auction software

1. Decide what “free” must mean for your organization

Choose the statement that best reflects your priority:

• We cannot pay an upfront fee.
• We want the nonprofit to keep the full intended payment.
• We do not want supporters asked to tip the platform.
• We are comfortable with a percentage only when items sell.
• We need a free plan for fewer than 20 items.
• We need paper or live-auction tools without a platform fee.
• We need processing included.

These are different requirements and lead to different platforms.

2. Map the auction format

Document whether the event will use:

• Online bidding
• Mobile bidding in the room
• Paper bid sheets
• A live auctioneer
• Online pre-bidding
• Auction items plus tickets and donations
• Automatic winner charging
• Invoices and bidder-initiated checkout
• Cash and checks

3. Calculate costs with the same assumptions

For each provider, use the same:

• Winning-bid total
• Number of transactions
• Average transaction size
• Card-versus-cash payment mix
• Number of items and bidders
• Required communications and support

4. Inspect the checkout experience

Run a test transaction and note:

• The amount intended for the nonprofit
• Payment-processing charges
• Platform fees
• Optional tips or contributions
• Required bidder fees
• Whether the amounts are editable
• Who receives each amount

5. Test the limitations

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 buyer’s guide. For detailed vendor profiles, see the best silent auction platforms comparison.

Which free model is best for different organizations?

• Eligible nonprofit wanting no platform or processing fees: Zeffy may be a strong fit.
• Organization comfortable with donor tips and wanting a broad fundraising suite: Givebutter may fit, but review auction charging settings.
• Organization wanting a full free suite with supporter contributions: BetterWorld may fit.
• Small online auction with 20 or fewer items: 32auctions may be sufficient.
• Small annual auction below $10,000 in recorded income: Auctria Explorer may be suitable.
• Traditional, paper, live, or hybrid auction needing flexible tools: BiddingOwl may fit, with a 5% fee only on winning online/mobile bids.
• Organization prioritizing no upfront payment over the final percentage: A pay-as-you-raise platform may be appropriate.

Frequently asked questions about free auction software

Is BiddingOwl free?

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.

Is Zeffy really free for nonprofits?

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.

Does free auction software charge bidders?

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.

Are payment-processing fees included?

Sometimes. Zeffy covers processing for eligible nonprofit transactions. Givebutter’s guarantee can cover qualifying transactions when tips are enabled. BetterWorld, BiddingOwl, Auctria, 32auctions, and other platforms may use separate processors or pricing arrangements. Confirm the exact rate and workflow.

What is the best free auction software for fewer than 20 items?

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.

What is the best free auction software for a hybrid event?

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.

Can free auction software automatically charge winners?

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. Confirm card authorization, failed-payment, and refund procedures.

What is the difference between a donor tip and a buyer’s premium?

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.

Can free auction software accept cash and checks?

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. Verify how offline transactions appear in reports.

Which free auction platform is cheapest?

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 bottom line

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:

• What the nonprofit pays
• What the bidder or donor sees
• What the payment processor charges
• Which limits apply
• Which event formats are supported
• What support and add-ons cost

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 silent auction platform guide, use our nonprofit auction software buyer’s guide, and review our silent auction fee examples. To explore BiddingOwl, review our features, pricing, payment options, and support, or create an auction.

Methodology

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, and feature information were verified using official provider websites and documentation on August 6, 2026. Because software pricing and features can change, organizations should confirm current terms directly with each provider before selecting a platform.

Sources and verification

Pricing, limits, and workflow details were last verified on August 6, 2026, using current official BiddingOwl, Zeffy, Givebutter, BetterWorld, 32auctions, Auctria, and CharityAuctions materials. Product terms may change. Readers should confirm current information directly with each provider before making a final decision.