Pound-Cost Averaging vs Lump Sum Investing: What the Data Actually Says (UK Guide)
When you have a lump sum to invest, should you dump it all in at once or trickle it in over time? The research is clear — Vanguard found lump sum beats pound-cost averaging about two-thirds of the time. But the real answer isn't just about the maths. Here's the honest breakdown: what the data says, when DCA makes sense despite the numbers, the behavioural case for drip-feeding, and what I actually do with my own money when a lump sum lands in my account.
