The new issue will offer a return of 50 per cent with full capital repayment as long as the FTSE 100 does not fall by more than 50 per cent from its starting date at maturity.
By implementing the capital at risk barrier at maturity instead of throughout the life of the plan, Barclays hopes to further mitigate the risk of capital loss.
In the event of the FTSE closing more than 50 per cent lower than its starting level at maturity, both capital and the return will reduce 1:1 with the index.
Index performance before maturity has no bearing on the potential 50 per cent return or the repayment of capital.
The minimum investment is £5,000 and the plan is open between March 30 and May 29.
Barclays Wealth director Colin Dickie says: “The first issue of our target growth plan had the same large safety margin but to further mitigate the risk the new issue will only observe the capital at risk barrier at maturity. This means index performance only becomes relevant on the final day of the plan – the index can fall by any amount in the interim without putting capital at risk.”