Principality Building Society has introduced a Six Month Regular Saver paying a headline 7.5% AER. The account accepts up to £200 per calendar month, with a maximum paid-in amount of £1,200, and credits interest at maturity. Key facts at a glance (Principality Six Month Regular Saver):Rate: 7.5% AER; Term: 6 months; Monthly cap: £200; Maximum paid-in: £1,200; Interest paid at maturity. 7.5% AER; 6 months; £200; £1,200; Interest paid at maturity. Those able to commit £250–£300 monthly for twelve months generally earn more overall with a one-year regular saver, but must accept each provider’s access rules.