The six year plan captures 100 per cent of movement in the index up or down during the investment term to a maximum of 12.5 per cent a year with the starting level of the index rebased each year.
This represents a minimum 45 per cent return if the index is at or above its initial level at maturity and a possible maximum payout of 75 per cent.
Contingent capital protection cannot be breached during the investment term and capital is guaranteed unless the index falls more than 50 per cent by 2015.
If the index is below its starting level at maturity and falls by more than 50 per cent at maturity in 2015 capital is at risk.
The plan also includes twice monthly liquidity during the investment term.
Minimum investment is £10,000 for direct investment or £7,200 for Isas and Isa transfers. Investors aged 50 or over can invest £10,200 into an Isa.
It can also be accessed through pension schemes, including Sipp and Ssas and is also available for corporate, trustee and charity investment.
The plan closes to new business on November 9, with the deadline for Isa transfers on October 26, unless over-subscribed.
Explicit plan charges are zero and IFA commission is 2 per cent which can be rebated.
The counterparty for the plan is A+ rated institution and is disclosed to wealth managers at the point of marketing.
Chief executive Chris Taylor says the new plan presents a “smarter” alternative to cash, equities, bonds and actively managed absolute return funds for the medium to long term.
He says: “In such an aneamic economic environment interest rates and returns on cash will presumably stay low and traditional long only funds will produce anaemic returns. Actively managed absolute return funds may prove their worth, but that will remain to be seen.
“The plan carries no active management risk and will deliver 45 per cent subject only to the institution backing the plan being solvent and if the market has been volatile during the investment term, it will potentially deliver 75 per cent.
“If the ‘worst case’ scenario plays out and in six years time the market/index is not just below its starting level but lower than 50 per cent of its starting level the plan has no worse risk than the market.”