Breastmilk Money addresses maternal health inequity by linking breastfeeding to financial empowerment. Built inside the Herconomy mobile banking app, the initiative allows Nigerian mothers to calculate how much money they save by breastfeeding instead of purchasing formula and deposit that amount directly into a dedicated savings account. Using WHO intake averages and live local formula prices, the milk to money calculator generates a personalized monthly savings figure. With one tap, mothers can transfer that exact amount and earn 14.3 percent interest, inspired by documented developmental benefits linked to exclusive breastfeeding. In a context where formula is aggressively marketed as aspirational, inflation increases household strain, and breastfeeding is often stigmatized or unsupported, Breastmilk Money reframes care work as economic strength. It provides women with a practical tool to sustain healthy behavior while building financial resilience. Launched during Women’s Month in Nigeria, the initiative was supported by a short film, social education with doctors and lactation specialists, live demonstrations, events, and out of home placements. Beyond awareness, Breastmilk Money embedded health advocacy into a real financial system, helping reduce economic barriers that undermine maternal and infant health outcomes.