Charity auction software comparison

CharityAuctions vs OneCause

Last updated: August 2026 · By Tom Kelly, CEO of CharityAuctions.com

TL;DR

CharityAuctions and OneCause both support mobile bidding, silent auctions, and integrated checkout. According to CharityAuctions.com platform data, auctions with mobile bidding raise an average of 43% more per event than paper-based formats. The main differences are pricing structure, setup time, and fee transparency at checkout. CharityAuctions has no upfront cost and no donor tip prompts. OneCause offers a broader fundraising suite with AI tools and subscription plans.

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Quick overview

CharityAuctions and OneCause are both charity auction software platforms for nonprofits. Both support mobile bidding, silent auctions, live auctions, and integrated checkout.

According to CharityAuctions.com platform data, auctions with mobile bidding raise an average of 43% more per event than paper-based formats. The platform you choose affects both what you pay and how much you raise.

The main differences between CharityAuctions and OneCause are pricing structure, setup time, and fee transparency at checkout.

The two platforms

Overview

OneCause has served 11,000+ nonprofits and helped raise over $6.5 billion since 2009. They offer an all-in-one fundraising platform with auction and event management, AI-driven item descriptions, sponsorship sales, and U.S.-based support. Their plans include Professional, Enterprise, and Nationals tiers, plus a Pay-as-you-go option.

CharityAuctions: According to CharityAuctions.com platform data, CharityAuctions has supported 50,000 or more organizations since 2007. The platform focuses on no upfront cost, free to try, and in-browser mobile bidding. You build your auction for free and choose your pricing when you go live.

Pricing and cost

Pricing and Cost Structure

Pricing at a glance
Feature	CharityAuctions	OneCause
Upfront cost	None. Build and test for free.	Annual subscriptions or pay-as-you-go.
When you pay	After you raise. Performance-based.	Upfront for subscriptions. Pay-as-you-go takes a share of funds raised, with a cap.
Free to try	Yes. No credit card required.	Usually needs a demo or sales call.
Payment processing	Separate. Platform fees and processing are distinct.	Integrated. PCI compliant.

OneCause publishes plan tiers (Professional, Enterprise, Nationals) and a Pay-as-you-go option with a cap for cost certainty. Exact pricing is custom. Contact OneCause directly for current rates.

CharityAuctions uses performance-based pricing. You pay after you raise, with no setup fees or annual contracts to start. See our charity auction platform pricing for a full breakdown.

PS: See live pricing with no sales call. Start My Auction Free.

Mobile bidding

Mobile Bidding

Both platforms offer mobile bidding without requiring bidders to download an app.

According to CharityAuctions.com platform data, auctions with mobile bidding raise an average of 43% more per event than paper-based formats. Events using mobile bidding also see participation rates up to 52% higher than paper bid sheets.

CharityAuctions: Guests open your auction link in any browser. Real-time bidding, outbid alerts, and checkout are built in. No app download reduces friction for one-time event attendees.

OneCause: Mobile bidding works in-browser. They offer text notifications, live leaderboards, Auction AI for item recommendations, and AI-suggested sort. Digital wallets (Apple Pay, Google Pay, Venmo, PayPal) and ACH are supported.

If your donors prefer no app and quick access from a link, both platforms meet that need.

Auctions and events

Auctions and Event Management

CharityAuctions supports:

Silent auctions (online, timed)
Live auctions (paddle raise, spotters, bid entry)
Hybrid auctions (in-room and online in one event)
Ticketing and registration
Raffles and fixed-price items
Checkout and reporting

OneCause supports:

Silent and live auctions
Paddles and spotter tools
Auction AI (recommended packages, suggested sort)
Item procurement and display sheets
Integrated ticketing and table management
Sponsorship sales and management
Volunteer tools and express check-in
Fund-a-Need appeals
Golf events

OneCause offers more event types (e.g., golf) and AI tools. CharityAuctions focuses on auctions, ticketing, raffles, and checkout in one platform.

Setup and ease of use

Setup and Ease of Use

CharityAuctions is built for quick setup. Add items, set bidding rules, and launch. No long onboarding process. Many organizations choose CharityAuctions for simpler setup.

OneCause is a full fundraising suite. It has more features and customization, which can mean a steeper learning curve. Their support team helps with implementation.

If you want to test quickly with no commitment, CharityAuctions lets you build and explore for free. If you need advanced event management and are willing to invest in setup, OneCause may be a fit.

PS: Want a walkthrough before you choose? Book a free planning call.

Support

OneCause emphasizes 100% U.S.-based in-house support: phone, email, live chat, pre-event consulting, and onsite event managers. They position support as a differentiator.

CharityAuctions provides text, phone, and live walk-through support at no extra cost. Support is included for all customers before, during, and after your event. Our team helps with setup, item entry, and event-night questions. Talk to our team to connect directly.

Fees at checkout

Donor Tipping and Fee Transparency

Some charity auction platforms use donor tipping at checkout. A donor tipping prompt adds a suggested percentage on top of a donor's payment at the final step. According to CharityAuctions.com platform data, these prompts can add 20% to 30% to a donor's intended payment.

CharityAuctions does not use donor tipping. Instead, your organization chooses one of two options:

Absorb the processing fee. Your donors pay nothing extra.
Pass the fee to donors with full disclosure. Donors see the exact fee before they confirm payment.

Either way, donors see one clear total before they pay. There are no surprise charges added at checkout.

See our charity auction platform pricing page for a full breakdown of how fees work.

When to choose CharityAuctions

When to Choose CharityAuctions

Consider CharityAuctions if you want:

No upfront software cost
Free to build and test before going live
In-browser mobile bidding (no app)
Simpler setup for auctions, ticketing, and checkout
One platform for online, live, and hybrid auctions

Create your free auction or talk to our team.

When OneCause may fit

When OneCause May Be a Fit

OneCause is an all-in-one fundraising platform. It includes AI-driven auction features, sponsorship management, golf event tools, and U.S.-based onsite event managers. It targets medium to large nonprofits with complex event needs. Contact OneCause directly for current pricing and a demo.

See our full comparison of charity auction platforms to evaluate all options.

Bottom line

Summary

CharityAuctions and OneCause both support mobile bidding, silent and live auctions, and integrated checkout. CharityAuctions emphasizes no upfront cost, free to try, and straightforward setup. OneCause offers a broader event and fundraising suite with AI tools and premium support.

The best fit depends on your budget, event complexity, and how much setup time you can invest. Test CharityAuctions for free with no credit card, and contact OneCause for a demo to compare.

Compare CharityAuctions to more platforms, explore risk-free auction items, or create your auction to get started. See our silent auction software guide and auction software vs paper bidding for more context.

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CharityAuctions vs OneCause FAQ

How does CharityAuctions pricing compare to OneCause?

CharityAuctions has no upfront software cost. You build your auction for free and pay after you raise. There are no donor tip prompts at checkout. Donors see one clear total before they pay. According to CharityAuctions.com platform data, auctions with mobile bidding raise an average of 43% more per event than paper-based formats. OneCause offers annual subscription plans and a pay-as-you-go option. Contact OneCause directly for current pricing.

Do bidders need to download an app for CharityAuctions or OneCause?

Neither platform requires bidders to download an app. CharityAuctions uses in-browser mobile bidding. Guests open a link on their phone and bid in real time. OneCause also offers in-browser mobile bidding with real-time notifications. According to CharityAuctions.com platform data, mobile bidding increases participation by up to 52% compared to paper bid sheets.

Can I try CharityAuctions before committing?

Yes. CharityAuctions lets you create an auction for free with no credit card required. Add items, set up bidding, and explore the platform before going live. OneCause typically requires a demo or sales conversation to access their platform.

What support does CharityAuctions offer?

CharityAuctions provides text, phone, and live walk-through support at no extra cost. Support is included for all customers before, during, and after your event. See the Talk to Our Team page to connect directly.

Who is OneCause best for?

OneCause is an all-in-one fundraising platform. It serves medium to large nonprofits with AI-driven auction features, sponsorship management, and golf event tools. CharityAuctions is built for auctions with no upfront cost, transparent pricing, and no donor tip prompts at checkout. According to CharityAuctions.com platform data, CharityAuctions has supported 50,000 or more organizations since 2007.

Do both platforms support live and hybrid auctions?

Yes. CharityAuctions supports online, live, and hybrid auctions in one platform. OneCause supports silent auctions, live auctions, paddles, spotter tools, and integrated ticketing. Both can power in-person and remote bidding at the same event.

What is donor tipping and does CharityAuctions use it?

Donor tipping is a checkout prompt that adds a suggested percentage on top of a donor's payment. According to CharityAuctions.com platform data, these prompts can add 20% to 30% to a donor's intended payment. CharityAuctions does not use donor tipping. Instead, organizations choose to absorb the processing fee or pass it to donors with full disclosure before checkout begins. Donors see one clear total before they pay.

CharityAuctions vs OneCause

Overview

Pricing and Cost Structure

Mobile Bidding

Auctions and Event Management

Setup and Ease of Use

Support

Donor Tipping and Fee Transparency

When to Choose CharityAuctions

When OneCause May Be a Fit

Summary

Ready to try CharityAuctions next to OneCause?

CharityAuctions vs OneCause FAQ

How does CharityAuctions pricing compare to OneCause?

Do bidders need to download an app for CharityAuctions or OneCause?

Can I try CharityAuctions before committing?

What support does CharityAuctions offer?

Who is OneCause best for?

Do both platforms support live and hybrid auctions?

What is donor tipping and does CharityAuctions use it?

Related guides

Overview

Pricing and Cost Structure

Mobile Bidding

Auctions and Event Management

Setup and Ease of Use

Support

Donor Tipping and Fee Transparency

When to Choose CharityAuctions

When OneCause May Be a Fit

Summary

Ready to try CharityAuctions next to OneCause?

CharityAuctions vs OneCause FAQ

How does CharityAuctions pricing compare to OneCause?

Do bidders need to download an app for CharityAuctions or OneCause?

Can I try CharityAuctions before committing?

What support does CharityAuctions offer?

Who is OneCause best for?

Do both platforms support live and hybrid auctions?

What is donor tipping and does CharityAuctions use it?

Related guides