Investing a fixed dollar amount at regular intervals regardless of price. Smooths out entry timing risk; typically used with index funds or ETFs.
Dollar-Cost Averaging is the practice of investing a fixed dollar amount at fixed intervals — typically monthly — regardless of market price. Some months you buy more units when prices are low; some months you buy fewer when prices are high.
The mathematical result is that your average cost per unit ends up below the simple time-average of the asset price — assuming the asset eventually recovers and grows.
Vanguard's research shows that in roughly two-thirds of historical periods, investing a lump sum immediately beats DCA-ing the same money in over 12 months — because markets trend up more often than down.
DCA's advantage is psychological, not mathematical. It removes the regret of 'I invested everything yesterday and the market crashed today' and the inertia of 'I'll wait for a better price'.
For most working investors, DCA isn't a choice anyway — you receive a salary monthly and invest a portion. The lump-sum vs DCA debate only applies when you have a windfall (bonus, inheritance) to deploy.
Robo-advisors (StashAway, Endowus, Syfe, AutoWealth) all support recurring GIRO deductions into diversified ETF portfolios — typically S$100 / month minimum.
Brokerage RSPs (Regular Savings Plans) at DBS, OCBC, FSMOne, and Tiger Brokers let you DCA directly into specific ETFs or stocks listed on SGX or US markets. Useful if you want a low-cost broad-market ETF like CSPX or VWRA without robo-advisor fees on top.
Cost discipline matters: a 1% management fee on top of a 0.07% ETF expense ratio chews up real returns over decades. Aim for an all-in cost below 0.5%.
Pausing during downturns. The whole point of DCA is to keep buying when prices are low. If you stop in a bear market, you're doing reverse-DCA.
DCA-ing into a single stock. The strategy assumes the underlying asset eventually recovers; a single company may not. Use broad ETFs, not individual names.
Holding too much cash 'waiting for a dip'. The math of compounding rewards time in market over timing the market.
Investing a fixed dollar amount at regular intervals — usually monthly — regardless of market price. You buy more units when prices are low and fewer when prices are high, which lowers your average cost per unit over volatile periods.
Mathematically, lump-sum investing beats DCA roughly two-thirds of the time historically — because markets trend up more often than down. DCA's advantage is psychological: it removes the regret of lump-summing right before a crash and the inertia of waiting indefinitely for 'the right time'.
Robo-advisors (StashAway, Endowus, Syfe, AutoWealth) support recurring GIRO deductions into diversified ETF portfolios. Brokerages like FSMOne, POSB Invest-Saver, and Tiger Brokers offer Regular Savings Plans (RSPs) into specific ETFs or stocks. Aim for an all-in cost below 0.5%.
Monthly is the practical default since most income arrives monthly. Weekly or fortnightly improves the math marginally but adds friction. The frequency matters far less than consistency — pick something you'll actually stick to over decades.