Calculate the financial performance of your fundraising campaign and understand how effectively your investment generated income and attracted donors.
Enter your campaign income, expenditure, donations and donor figures to calculate your initial fundraising ROI. You can then unlock a complete performance breakdown and download your personalised fundraising report.
Free to use. Your campaign figures are not stored or sent to Blake Mark Productions.

Your results
Enter your campaign figures to calculate your headline fundraising return.
Your initial result
Complete the short form to unlock:
Full results
Fundraising performance should not be judged by the total amount raised alone.
A campaign that generates £20,000 may initially appear more successful than one generating £10,000. However, that conclusion can change when campaign expenditure, staff time, donation volume and donor acquisition are considered.
Our Charity Fundraising ROI Calculator helps charities examine the relationship between campaign costs, income and donor activity.
It provides an initial fundraising ROI percentage followed by a more detailed breakdown of the metrics influencing the result.
This gives fundraising and marketing teams a clearer starting point for evaluating campaigns, comparing activity and making future investment decisions.
The calculator compares your fundraising income with your direct campaign costs and any staff or overhead costs you choose to include.
It then calculates your fundraising ROI, net income, income-to-cost ratio, cost per donation, cost to raise £1, donor acquisition cost, average donation and new donor percentage.
Include costs directly associated with planning, promoting and delivering the campaign.
These may include advertising, print, postage, creative production, venue hire, suppliers, fundraising platforms and payment fees.
You can also include staff and overhead costs for a more complete assessment.
Net income is the monetary amount remaining after campaign costs are deducted.
Fundraising ROI expresses that net income as a percentage of the original campaign investment.
Divide total campaign costs by the total income raised.
For example, if a campaign costs £2,000 and raises £10,000, it costs £0.20 to raise each £1.
There is no universal figure.
An acceptable donor acquisition cost depends on average donation value, repeat giving, retention, donor lifetime value and the charity’s wider objectives.
A higher initial acquisition cost may be sustainable when donors continue supporting the charity over several years.
Include staff time if you want to understand the campaign’s full organisational cost.
You may exclude it when comparing direct media or supplier costs, but the same methodology should be applied consistently across every campaign being compared.
es. It can be used for events, appeals, digital campaigns, direct mail, regular-giving acquisition and other income-generating fundraising activity.
Make sure every figure relates to the same campaign and period.
You can calculate and view your initial fundraising ROI without completing the form.
To unlock the complete performance breakdown and download your personalised PDF report, you will need to provide your contact details.
No. The campaign and donor figures entered into the calculator remain within your browser.
They are not sent to Blake Mark Productions, we only receive the contact information entered into the form.
Yes. After completing the short form, you can download a personalised one-page PDF containing your figures, fundraising ROI, performance metrics and an explanation of the result.
The calculator goes beyond a single fundraising ROI percentage.
The percentage return generated after subtracting total campaign costs from the income raised.
Your direct campaign expenditure combined with any staff and overhead costs you choose to include.
The average expenditure used to attract each new donor.
The income remaining after the entered campaign costs have been deducted.
The amount of fundraising income generated for every £1 spent on the campaign.
The minimum income the campaign needed to generate to cover the costs entered.
There is no single approach that works for every charity.
A direct-cost calculation can be useful when comparing advertising channels, creative approaches or individual campaign tactics.
A full-cost calculation provides a broader assessment by including the internal resources required to deliver the campaign.
For example, a fundraising event may appear highly efficient when assessed only against venue and promotional costs. The result may change when staff time, travel, administration and fulfilment are included.
The important point is consistency.
If one campaign includes staff costs and another does not, the results cannot be compared fairly. Decide which approach supports the decision you are making and apply it consistently.


A calculation explains what happened. The real value comes from understanding why it happened and what should change next.
If your return is lower than expected, the issue may relate to targeting, campaign messaging, donation journeys, website experience, advertising costs or supporter follow-up.
If your return is strong, the next question is whether the campaign can scale without increasing donor acquisition costs or weakening donor quality.
At Blake Mark Productions, we help charities and non-profit organisations strengthen their marketing, fundraising communications and digital campaigns.
Book a free 30-minute marketing review with Blake Mark Productions.
We will discuss your current fundraising and marketing activity, the challenges affecting performance and the opportunities that could help your charity generate a stronger long-term return.




We help charities and non-profit organisations improve visibility, communicate their impact clearly, and reach supporters, volunteers and service users through strategic digital marketing and creative services.
From websites and social media to content creation, Google Ad Grants and ongoing marketing support, we provide flexible support tailored to your organisation.
We work with charities, CICs and non-profit organisations across awareness campaigns, fundraising, service promotion and community engagement.



