Tim Barker: How to Maximise Kingdom Impact Per Dollar #27

Can Christians be more rigorous about where they give, and how much difference each dollar actually makes? JD explores this with Tim Barker, founder of ROI Ministry, which researches Christian charities to identify giving opportunities that produce high levels of measurable “kingdom impact per dollar.”

Tim shares how losing his business led him to rethink Christian stewardship, why so little Christian giving reaches the world’s poorest and least-reached people, and how ROI Ministry evaluates organisations working in evangelism, discipleship, clean water, healthcare, housing and human trafficking prevention. They also discuss the difference between outputs, outcomes and genuine impact, the difficulty of measuring spiritual change, and how much confidence donors should place in metrics like decisions for Christ or children discipled.

Articles, Scripture, organisations, and other media discussed in this episode

  • ROI Ministry – Tim Barker’s organisation, which evaluates ministries according to what he describes as “measurable kingdom impact per dollar” and publishes an annual Top 10 list.

  • World Christian Trends, AD 30–AD 2200: Interpreting the Annual Christian Megacensus – The research volume Tim says changed how he thought about the allocation of Christian giving around the world.

  • Generous Giving – Tim says he initially encountered a reference to the global Christian giving statistics through Generous Giving.

  • The Prayer of Jabez by Bruce Wilkinson – Tim discusses the book and the prayer to “enlarge my territory” while recounting his own story of praying for greater impact.

  • Secrets of the Vine by Bruce Wilkinson – Mentioned by Tim alongside The Prayer of Jabez, which he says should be read together with it for balance.

  • Jesus Film Project – One of the ministries Tim names when discussing ROI Ministry’s recommended organisations.

  • Heart for Africa – Mentioned as another ministry on Tim’s list, including its use of the Jesus Film in Africa.

  • The Mailbox Club – A children’s discipleship ministry discussed at length as an example of ROI Ministry’s approach to measuring impact.

  • neverthirst – A Christian clean-water organisation Tim discusses as an example of measuring the number of people provided with safe water per dollar.

  • The Bucket Ministry – Another clean-water ministry discussed by Tim, using water filters alongside repeated follow-up and Christian ministry.

  • YWAM Homes of Hope – Mentioned by Tim as a ministry providing basic housing to families in lower-income settings.

  • MedSend – Discussed as a ministry working through healthcare in countries where conventional missionary access can be restricted.

  • She Is Safe – Tim discusses the organisation as an example of trafficking prevention and restoration, including work with children and families vulnerable to exploitation.

  • Calvin Edwards & Company – The research firm Tim says carries out deeper due diligence on ROI Ministry’s candidate organisations using around 60 data points.

  • When Helping Hurts by Steve Corbett and Brian Fikkert – Raised during the discussion of whether charity programmes actually improve outcomes relative to what would otherwise have happened.

Mentioned Scripture:

  • 1 Chronicles 4:10 - “Jabez cried out to the God of Israel, “Oh, that you would bless me and enlarge my territory! Let your hand be with me, and keep me from harm so that I will be free from pain.” And God granted his request.”

  • Luke 15:7 - “I tell you that in the same way there will be more rejoicing in heaven over one sinner who repents than over ninety-nine righteous persons who do not need to repent.”

  • Luke 4:18 - “The Spirit of the Lord is on me, because he has anointed me to proclaim good news to the poor.”

  • Matthew 6:19–20 - “Do not store up for yourselves treasures on earth, where moths and vermin destroy, and where thieves break in and steal. But store up for yourselves treasures in heaven, where moths and vermin do not destroy, and where thieves do not break in and steal.”

  • Matthew 6:3–4 - “But when you give to the needy, do not let your left hand know what your right hand is doing, so that your giving may be in secret. Then your Father, who sees what is done in secret, will reward you.”


Episode Highlights:

The Dangerous Prayer That Led To ROI Ministry

“I prayed a prayer, a very dangerous prayer, and I said, God, do whatever you need to do so that we can make a greater impact. And then I followed it up with break my heart with the things that break your heart. And I caution your listeners, do not pray that prayer unless you're really ready for God to answer it, because He will.”

What Changed Tim’s Thinking About Christian Giving

“We as a church, we get an F in stewardship. And it pretty much reflected my own stewardship at that time. And so I was in tears over this information.”

ROI Ministry’s Core Idea

“Our simple, clearly defined metric for evaluating ministries is measurable kingdom impact per dollar.”

Why Tim Thinks Material Aid and Evangelism Belong Together

“If you provide somebody clean water, shelter, food, education, medical needs, but you don’t share with them Jesus Christ in light of eternity, what a disservice.”

Focusing on Impact Rather Than Dollars Raised

“We don’t celebrate the dollars... we get excited about the impact.”

Giving Without Seeking Recognition

“They don’t want the credit. They want all the credit given to God.”



 

Learn more

 

How to Give Effectively

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Philip Swenson: The Philosopher's Case for Giving to the Global Poor #26