With a large lump sum, is it better to invest it all at once or gradually?

Starting capital: the engine that gets everything moving

Even a modest starting capital makes an enormous difference over the long run. There's no need to wait until you have "enough": the best time to start is as soon as possible. Thanks to compound growth, every pound invested today works for years — and goes on to generate returns of its own.

With a large lump sum, two cautious approaches

Anyone managing a large lump sum — following a property sale, an inheritance, or a windfall — faces a different challenge: investing it all at once carries the risk of entering at a market peak. Statistically, over long horizons, investing straight away has produced a higher return in the majority of historical periods — but the psychological and emotional impact of an immediate downturn right after a lump-sum entry shouldn't be underestimated.

Two cautious approaches: spread the purchases over 12 to 24 months with regular monthly buys, reducing timing risk; or start with a lower equity share (e.g. 40 to 50%) and increase it gradually over the following years, easing into your final target more calmly and with less exposure to initial risk.