This exploratory study carried out in Coastal Kenya by TUM - funded and supported by CBM – draws attention to monetisable <span class="attribute-to-highlight medbox">social</span> factors in the measurement of impacts of livelihood promotion. When NGOs in development cooperation try to capture the effects of livelihood promotion programmes for the target group (e.g. persons with disabilities) and their families, it is not enough to only look at the individual’s income or consider common business economics measurements (like <span class="attribute-to-highlight medbox">Return</span> <span class="attribute-to-highlight medbox">on</span> <span class="attribute-to-highlight medbox">Investment</span>) but to look more widely <span class="attribute-to-highlight medbox">on</span> the changes in the Quality of Life. This study tried to apply the so called <span class="attribute-to-highlight medbox">Social</span> <span class="attribute-to-highlight medbox">Return</span> <span class="attribute-to-highlight medbox">on</span> <span class="attribute-to-highlight medbox">Investment</span> (<span class="attribute-to-highlight medbox">SROI</span>) <span class="attribute-to-highlight medbox">approach</span> in the field of livelihood promotion. For this goal a general formula was developed and field-tested to account for a broad range of (<span class="attribute-to-highlight medbox">social</span>) impacts.