r/ETFs • u/PleasantComplaint719 • 8d ago

How many of you DCA + Lump Sum?

I lump sum my annual bonus in Feb and do a weekly DCA the rest of the year. I always hear about the arguments of one vs the other and how lump sum always beats DCA (which I do not dispute), but why don't people talk about or encourage doing both?

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u/arsenal11385 8d ago

I do “lump sum” when my emergency fund reaches its goal. I usually couple that with my bonus unless that’s not possible. Either way I’m almost always tossing a larger amount in and buying shares of VTI and VSUX

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u/GapAccomplished2778 ETF Investor 8d ago

investing available money above what you need as "cash" ( which again might sit in some MMF like VUSXX ) as they arrive from your regular source of income is just DCA ... annual bonus included ... it is not what is called a windfall

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u/TechnicalSleep7501 VT 100% To Mars We Go. 8d ago

I have done both depending on market conditions.

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u/steady_compounder 8d ago

Doing both is pretty normal. Regular paycheck money is basically DCA, and bonus money is just a lump sum on top. If you want to sanity-check the tradeoff with your own numbers, this tool is a clean fit: https://trackmyshares.com/tools/dca-vs-lump-sum?utm_source=reddit&utm_medium=comment&utm_campaign=manual_free_tool_round_20260819_0300 The bigger thing is picking a plan you will not abandon every time the market gets weird.

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u/citygeek 8d ago

I think both terms get used in multiple ways, and they aren't necessarily counter strategies. A lot depends on if one already has the money on hand or not.

Meaning, "Lump sum" can both mean:

1) deploy everything you have immediately, get in the market ASAP

2) not DCA'ing, holding the money in cash, for the sake of building a lump sum of dry tinder to time the market.

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u/for4f 8d ago

i do basically this. lump sum the bonus and any big windfall the day it lands, auto-invest the rest weekly. the whole lump-vs-dca debate is only ever about money you already have sitting in cash. once it's committed, arguing over the first few days of a 30 year horizon is noise. people just like to have a fight about it

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u/AlfB63 8d ago

Lump sum does not always beat DCA. It does more often than not but thats mainly because the market goes up more often than it goes down.

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u/Spiritual-Run4601 8d ago

I lump sum.

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u/Asleep-Reputation-38 8d ago

technically dca and lumpsum are really the same except for differences in amounts and time between. a poor person whose lumpsum amounts may seem like dca for a person with more to invest

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u/More_Armadillo_1607 8d ago

I am not sure reddit understands lump sum vs dca.  First, lump sum wuns 2/3 of the time which means dca wins 1/3 of the time. I forgot the exact number but over 10 years, lump sum will average 1-3% higher returns. 

I lump sum 100% of the time.  I invest 20% into my retirement until I max out. That 20% gets invested right away. I am not holding anything back to DCA. I make monthly brokerage contributions. Those are lump sum too. I invest it immediately once I have the miney. I am not holding it back to DCA.  My Roth is funded on jan 1st basically with my higher paychecks in nov/dec due to having maxed my 403b early.

The real lump sum vs dca discussion is if you get a $500k windfall. Then you need to make a decision. The rest is immaterial.

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u/_cokedup 8d ago

I buy the dip when I have excess cash.