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Nonprofit guides

The Ultimate Guide to Silent Auction Rules and Best Practices

June 8, 2024
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What are silent auction rules, and why are they important?

Silent auctions are popular fundraising events—and for good reason. With the right items, set-up, and strategy, silent auctions can be a great way for nonprofits to engage supporters and bring in tons of donations, whether the auction is online or in person.

But like any game or event, silent auctions require a few rules to make them as successful as possible. By setting up policies and implementing best practices, nonprofits can make their silent auctions as fun, engaging, and profitable as possible.

The 10 silent auction rules to stand by

1. Set start and end times

Be sure to set specific start and end times for your auction and communicate these times clearly to your participants—either through signage at the event and/or through emails prior to the event.
Setting a start and end time helps your nonprofit organize and ensures that everyone has an equal opportunity to bid on items. 

2. Price auction items based on their fair market value 

Assigning a starting bid for each item that reflects its fair market value offers a baseline for bidding and helps ensure items are sold at a reasonable price.

Plus, accurately pricing items can also boost participants' confidence in the auction’s integrity, and their willingness to bid.

3. Create a minimum bidding increment requirement 

To keep bidding competitive and to ensure that your nonprofit brings in enough revenue, be sure to specify a minimum bidding increment for each item. For example, if the increment is $10, and the current bid is $50, the next bid must be at least $60. 

Be sure to include this information on bid sheets and on signage at in-person events to avoid the disqualification of bids.

4. Allow participants to bid on multiple items 

One of the best ways to maximize a silent auction’s revenue is by encouraging participants to bid on items as many times as they wish. 

Multiple bids can drive up the final sale price of the items available, and give bidders more flexibility and options when it comes to participating.

5. Make all bids and sales final 

Making all bids and sales final protects the integrity of the auction and ensures that all bids are made in good faith. 

Typically, nonprofits will state this policy at the bottom of their auction materials and announcements.

6. Require that all bidders pay in full at the end of the auction 

Many nonprofits allow for deferred payments at the end of the auction, meaning winners can pay for the item they’ve won at a different date. While this gives donors a bit more flexibility, it can put your nonprofit at risk of not getting paid at all, or not getting paid on time.

Instead, require that all winning bidders pay the full amount of their winning bid at the auction's end. Ensure your payment process is straightforward and secure and offer multiple payment options, such as credit cards and mobile payments, to facilitate.

7. Implement reasonable limits

Consider implementing limits on the number of items a single bidder can win or the total amount they can spend. This can prevent any one bidder from dominating the auction and promotes a more equitable distribution of items.

8. Set applicable age restrictions 

Certain items, such as alcohol or collectibles, may have age restrictions. Make sure these restrictions are clearly noted and verify the age of bidders when necessary. 

9. Ensure bidders are aware of risks

When supporters bid on an item, they assume the risk of doing so.

While most people realize that this rule is a normal part of every auction, it doesn’t hurt to remind bidders of all the risks associated with the items and the bidding process. Including a disclaimer in your auction terms is a good way to help protect your organization.

10. Sell items as-is

All items should be sold in their current condition, without guarantees or warranties. 

Clearly describe the condition of each item in your auction materials to set appropriate expectations and reduce the risk of disputes.

The 6 best practices for running a silent auction

1. Start planning early

Running an auction is a lot of work. To avoid headaches, be sure to start planning as soon as possible by:

  • Setting clear goals from the start: Determine your fundraising targets and what you aim to achieve with the event.
  • Creating a timeline and plan: Outline key milestones, such as item solicitation, marketing, and event setup.
  • Assembling a team: Form committees or assign roles for item procurement, marketing, and logistics to distribute the workload. 

2. Offer diverse auction items

One of the best ways to ensure that your auction is as profitable as possible is by offering a mix of items at different price points such as experiences, gift baskets, memorabilia, and unique services. Or, by honing in on specific target audience interests for a more curated auction.

3. Make bidding simple and easy

To keep supporters engaged and eager to participate, bidding should be as easy and simple as possible. That might include offering:

  • Mobile bidding: Enable mobile bidding to allow participants to bid from anywhere, even during the event.
  • Clear instructions: Provide clear, simple instructions on how to place bids, both online and at the event.
  • Real-time updates: Use technology to provide real-time updates on current bids, keeping participants engaged and competitive.

4. Make the event space engaging

If your auction is in-person, you’ll need to ensure that the physical space is well set up. This might include: 

  • Visually appealing and well-organized displays: Arrange items attractively with clear descriptions, photos, and starting bids.
  • Informative signage: Use signage to guide participants and provide essential information about bidding rules and procedures.
  • Extras: Ensure the venue is comfortable, with enough space for participants to move around and view items—even sell food and drink for some extra fundraising.

5. Take promotion seriously 

Like with any fundraising event, running an auction requires marketing and promotional initiatives to get the word out. Before the event, be sure to:

  • Send out frequent communications: Send save-the-date notices and regular updates leading up to the event.
  • Highlight key items: Showcase some of the most exciting items in your promotions to generate interest and anticipation.
  • Leverage social media and influencers: Partner with local influencers or community leaders to spread the word and attract more attendees.

6. Always follow-up

In order to make sure attendees feel valued, and that your organization can run another successful event in the future, be sure to:

  • Send thank yous: Send personalized thank you notes to all participants, donors, and volunteers.
  • Collect feedback: Solicit feedback from attendees and staff to learn what worked well and what could be improved.
  • Generate a post-event recap: Share the results of the auction with your community, highlighting the impact of the funds raised.

Silent Auction Rules Example Template

[Your Nonprofit Organization's Name]

Silent Auction Rules

Welcome to our silent auction! Please review our auction rules to ensure a fair and enjoyable experience for all participants.

1. Bidding Period

  • Bidding will begin at [start time] on [start date] and end at [end time] on [end date].

2. Fair Market Value

  • Auction items are priced based on their fair market value, which is indicated on the bid sheets.

3. Minimum Bidding Increment

  • Bids must meet the minimum bidding increment requirement of [minimum increment amount]. Bids not adhering to this increment will be disqualified.

4. Multiple Bids

  • Participants are allowed to bid on an item multiple times. Each new bid must be higher than the previous bid by at least the minimum increment.

5. Finality of Bids and Sales

  • All bids and sales are final. No refunds or exchanges will be provided.

6. Payment Obligations

  • Winning bidders agree to pay in full at the end of the auction. Payment must be completed by [payment deadline].

7. Limitations

  • Limits may apply to the number of items a single bidder can win or the total amount they can spend. Please check item descriptions for specific limits.

8. Age Restrictions

  • Certain items may have age restrictions. Bidders must meet these requirements to bid on and win these items.

9. Assumption of Risk

  • Bidders assume all risks related to the auction items and the bidding process.

10. Item Changes

  • Items may change or be withdrawn without notice. We apologize for any inconvenience this may cause.

11. Determination of Winners

  • The highest bid at the end of the auction period will determine the winner of each item.

12. As-Is Condition

  • All items are sold as-is, with no guarantees or warranties. Please review item descriptions and conditions carefully.

Thank you for participating in our silent auction and supporting [Your Nonprofit Organization's Name]. If you have any questions or need assistance, please contact [contact person] at [contact information].

Happy Bidding!

Launch your silent auction for free with Zeffy 

Preparing for and executing an effective and fun silent auction for your nonprofit can feel burdensome. But with the right rules, procedures, best practices, and tools, your nonprofit can ensure that every silent auction is a massive success.

By using free silent auction software like Zeffy, your nonprofit can make participating in your auction simple and fun with mobile bidding, automated bidding notifications, easy checkout, and so much more. Plus, nonprofits can take advantage of Zeffy’s free marketing and engagement tools to communicate rules ahead of time via email and follow up to say thanks at the end.

Silent auction rules: FAQs


Silent auctions offer a fun and effective way to raise funds for nonprofit organizations, for a few reasons:

  • Engagement: Silent auctions engage donors and supporters by offering them the opportunity to bid on exciting items and experiences.
  • Community building: Silent auctions bring people together, fostering a sense of community among supporters, volunteers, and beneficiaries.
  • Fundraising: Silent auctions can generate significant revenue for nonprofits through the sale of donated items and experiences.
  • Networking: Silent auctions provide a platform for networking and building relationships with donors, sponsors, and local businesses.
  • Flexibility: Silent auctions can be tailored to fit various themes, venues, and budgets, making them a versatile fundraising option.
  • A silent auction is a fundraising event where items are displayed for bid, and participants write down their bids on bid sheets or electronically using silent auction software.

    Unlike traditional auctions with a live auctioneer, silent auctions allow participants to bid discreetly without the need for verbal exchanges. At the end of the bidding period, the highest bidder for each item wins the item.

    Choosing the right type of charity auction for your fundraising event depends on your goals, target audience, and resources:

  • Silent auctions : In a silent auction, items are displayed with bid sheets, and attendees write their bids during the event. The highest bid at the end wins the item.
     Best for: Events with a social or mingling component, such as galas, cocktail parties, or community gatherings.
  • Live auctions : At a live auction, an auctioneer conducts the auction, calling for bids on items in real time. Bidders raise their paddles to bid.
    Best for: High-energy events with a competitive atmosphere, such as formal dinners, galas, or events with a large audience. 
  • Online auctions : In online auctions include, bidding takes place online over a specified period. Items are listed on a website or auction platform, and bidders place their bids digitally.
     Best for: Organizations with a broad audience, including remote or international supporters, or when in-person events are not feasible. 
  • Hybrid auctions : Hybrid auctions combine elements of live, silent, and online auctions. Bidding can take place both in person and online, often with live streaming of the auction event. 
    Best for: Events aiming to maximize participation and engagement from both local and remote audiences. 
  • Keep reading :

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