The company says the move supports its focus on SIPP innovation and it plans to expand the brand with new products.
In May the group appointed Sandra Robertson as its new group chief executive to replace Stewart Davies who stepped down after six and a half years.
The firm, which recently accelerated the introduction of e-signatures, is planning more investment in technology and new products and Ms Robertson will lead this strategy.
The company administers £2bn in assets for 10,000-plus clients in multiple jurisdictions.
Ms Robertson has worked at Momentum as a consultant for the past year and has a 30-year career in financial services, which includes roles at the Knox Group and Charterhouse Group International.
Ms Robertson said: “iPensions Group launches with a strong track record of deep technical knowledge, high-calibre service and ambitious plans for future growth.”
“The company’s decades of experience help us to confidently develop and blend technology with strong technical support, transparent communication, robust diligence and dedicated people to deliver our vision of leading the pensions sector. The update of our brand elements helps to embody our vision better and it paves the way for future developments.”
The company says it has ambitious plans for the Self-Invested Personal Pensions market and plans to expand in this area with new product launches and further investment in technology.
Momentum Pensions remains the brand for QROPS plans.