OC is a faith-based mission who depends on the Lord to provide committed financial supporters and partners for mission giving. The contributions from these individuals help generate ministry opportunities around the world, impact mission workers and their global work, and provide a means for the International Mobilization Center to function. You can be a part of mobilizing church leaders around the world by donating to OC. You can see a summary of the Lord’s blessing on OC’s ministry and finances in our Annual Report, Download (size 2MB).

How Can I Give?

Here are some planned giving options:


Stay Connected

Would you like to receive OC news or a specific mission worker's newsletter by email?

Ways of Mission Giving at OC


Amazon Smile icon for OC mission givingIf you shop at, they will donate a portion of your purchase to OC through Amazon Smile. Click the icon to get started.

By Checking Account Transfer

Save the costs of checks and postage (and credit card fees) by setting up an automatic monthly transfer from your checking account.

Please view this OC Automated Giving brochure and mail it to OC with your information to set up the transfer. Or download/print this form.

By Credit Card Online

Or you can give online now using your credit card, with minimum donation of $5 by credit card...

Give Online Now

Already have an online giving account? Login here.
Account Login

[If you believe that an error has been made in connection with your online donation, contact us immediately at 800-676-7837 or  We will be happy to assist you in correcting any such error within reason, and if necessary make any refund that is appropriate.] SecurityMetrics for PCI Compliance, QSA, IDS, Penetration Testing, Forensics, and Vulnerability Assessment

By Phone

Donate over the phone by calling 800.676.7837 or 719.592.9292

By Mail

Mail checks (no cash please) to:
One Challenge (OC International)
Attn: Donor Accounting
PO Box 36900
Colorado Springs, CO 80936

Please print a fill-in donation card to send with your check.

Our Financial Commitment to You

ECFA logoOC is firmly committed to good stewardship of funds entrusted to us by our friends and donors. We promise to use your gifts wisely and effectively in Christ’s name. To ensure our financial accountability to you, we are a member of the Evangelical Council for Financial Accountability.

OC mission workers are responsible for their own support. The mission is audited annually by an outside auditing firm, and financial statements are available upon request.