How to run an online silent auction, step by step

Updated November 1, 2026 · 3 min read

An online silent auction works like the paper version, except bids happen on phones and the auction isn’t limited to the people in the room. Supporters can bid for days, get a text when they’re outbid, and pay with a card when it closes.

Here is the plan most schools and nonprofits follow, from six weeks out to the thank-you notes.

1. Set a goal and a timeline (6 weeks out)

Pick a dollar goal and what it funds. “$15,000 for the new playground” gives bidders a reason to raise their bid. Then choose when bidding opens and closes.

Most online auctions run 5 to 10 days. Long enough for people to find it, short enough that it feels urgent. If you have an in-person event, open bidding a week before and close it during the event.

2. Build your team

An auction lead who owns the timeline.
Two or three people collecting donated items.
One person entering items and photos.
One person on promotion: newsletter, social posts, group chats.
A treasurer or finance contact for payments and receipts.

3. Collect items (4 to 6 weeks out)

Aim for a mix: a few headline items that create buzz, plenty of mid-range items most guests can afford, and some easy wins under $50. Experiences and services often raise more than physical goods because they’re hard to price at a store.

For every item, get a good photo, a two- or three-sentence description, the donor’s name and the fair market value. You’ll need the value for donor receipts.

4. Price each item

A common rule is a starting bid of 30 to 50 percent of the item’s value, with bid increments of about 10 percent of the starting bid. Use a reserve price only for items you can’t afford to sell cheaply, and a Buy Now price for items people might want to grab outright.

Our guide to starting bids goes deeper on each of these.

5. Set up the auction site (2 to 3 weeks out)

Add your logo, colors and a short story about what the money funds.
Enter items with photos, starting bids, increments and any reserves.
Connect your payment account so winners can be charged automatically.
Require bidders to save a card before bidding. It is the single biggest time saver at checkout.
Run a test with two or three volunteers, then reset it before going live.

6. Promote it (from opening day to close)

Share one short link everywhere: newsletter, email, social posts, class group chats and printed QR codes. Spotlight a few items each day instead of posting the whole catalog at once.

Schedule reminders in advance: one when bidding opens, one the day before close, and a last call 30 to 60 minutes before the end. Most bids arrive in the last few hours, and a reminder at the right moment matters.

7. Close the auction

Turn on soft close, which adds a few minutes when a bid comes in near the end, so nobody wins by sniping in the last second. If an item gets no bids, you can offer it again later or bundle it with another.

8. Collect payment and hand off items

If bidders saved a card, charge winners right after close and email receipts, and let winners know each item’s fair market value. Set one pickup window, or arrange delivery for experiences and gift cards.

9. Thank everyone

Within a week, thank bidders, donors and volunteers, and share the total raised with what it will fund. Note which items did well and what you would change. Next year’s auction starts with this list.

Where CausIO helps

CausIO handles steps 5 through 8 for you: branded bidder pages, bidding by phone or text, scheduled reminders, soft close, card-on-file checkout and automatic receipts. You can duplicate this year’s auction to start next year.