DCA in Life Insurance: Progressive Saving and Cost Averaging

What is progressive saving (DCA)?

DCA, or Dollar Cost Averaging, is an investment strategy that consists of investing a fixed amount at regular intervals, regardless of market conditions. Rather than trying to find the "right moment" to invest a lump sum -- something even professionals fail to do reliably -- you spread your investments over time and let the mathematics work in your favour.

This method, widely used by institutional investors and savvy savers around the world, has a powerful mathematical advantage: by always investing the same amount, you automatically buy more units when prices are low and fewer units when prices are high. Your average purchase price is naturally optimised, without any action on your part and without requiring financial analysis skills.

DCA is also a psychologically comfortable strategy. It eliminates the anxiety of "market timing" (trying to guess market highs and lows), a practice that, according to numerous academic studies, destroys more value than it creates for the vast majority of retail investors.

Why DCA is particularly suited to life insurance

Standing orders built natively into policies

Most online life insurance policies natively offer standing-order contributions (monthly, quarterly or semi-annual). This feature makes implementing DCA extremely simple: you define an amount, a frequency and a split across different vehicles, and everything executes automatically each month without you having to lift a finger.

Minimum amounts are particularly accessible on the best policies: 50 to 100 euros per month on most online policies, sometimes as low as 25 euros. This accessibility makes DCA practicable for the vast majority of savers, including those with modest incomes.

On a policy like Linxea Spirit 2, standing orders can be configured directly from the online dashboard, with the ability to automatically split each contribution between the euro fund, ETFs, SCPI and other available unit-linked vehicles. Lucya Cardif offers the same flexibility with a choice of over 2,300 vehicles. Boursorama Vie provides a managed portfolio option that fully automates allocation based on your risk profile.

Automated discipline against behavioural biases

The investor's main enemy is neither inflation nor market crashes: it is their own emotions. Fear during downturns pushes you to sell at the worst moment. Euphoria during rallies leads you to buy at the peak. Procrastination simply prevents you from starting to invest at all. These behavioural biases, extensively documented in behavioural finance (notably the work of Daniel Kahneman and Amos Tversky), naturally lead to buying high and selling low -- the exact opposite of a winning strategy.

Standing orders eliminate these emotional biases. Once set up, deductions happen without human intervention. You continue investing even when markets drop 20% or 30%, which is precisely the moment when you are buying assets at a discount and creating the most long-term value.

The tax advantage of the life insurance wrapper

DCA within life insurance benefits from an additional edge over DCA in a regular brokerage account (compte-titres ordinaire): the favourable tax treatment of life insurance. Internal switches (reallocations between vehicles) trigger no taxation. Capital gains are only taxed at the time of withdrawal, and after 8 years of holding, you benefit from an annual allowance of 4,600 euros (9,200 euros for a couple) on gains. This tax wrapper shields your DCA strategy from tax erosion and maximises the effect of compound interest.

DCA in practice: a detailed worked example

DCA vs lump-sum investing: an objective comparison

It is important to nuance the DCA advantage: academic studies (notably Vanguard's 2012 study, updated in 2023) show that lump-sum investing outperforms DCA roughly two-thirds of the time over long periods, because markets are historically trending upward. By investing everything immediately, you benefit longer from this underlying upward trend.

However, DCA remains the optimal strategy in several practical situations:

DCA is the dominant strategy in these three situations:

1. You have regular monthly income: you do not have a large sum to invest at once, but you can save each month. This is the case for the majority of French savers. DCA is not a choice here: it is the only rational option.

2. You receive a large sum and fear bad timing: inheriting 100,000 euros and investing it the day before a crash is a real risk. Spreading over 6 to 12 months significantly reduces this anxiety and the risk of a large initial loss, even though average performance is slightly lower.

3. Your risk tolerance is limited: DCA exposes you to the market gradually, which is psychologically more comfortable. A saver who sleeps well at night is a saver who will not panic during the next crash and will maintain their strategy over the long term.

How to set up your DCA in life insurance

Choose the right policy

Not all life insurance policies are equal for a DCA strategy. Essential criteria are fees (0% on contributions is imperative), the minimum amount for standing orders (the lower the better), and the range of available vehicles (ETFs are indispensable for the lowest costs).

Determine the right monthly amount for your situation

The amount must be compatible with your savings capacity without impacting your lifestyle or eating into your emergency fund. A simple, proven rule: save between 10% and 20% of your net income, split across your different investments (Livret A for emergencies, life insurance for the long term, PER for retirement if relevant).

Monthly allocation examples by income:

• Net income of 2,000 euros per month: 200 to 400 euros total savings, of which 100 to 200 euros in life insurance (DCA)
• Net income of 3,000 euros per month: 300 to 600 euros total savings, of which 150 to 350 euros in life insurance (DCA)
• Net income of 4,000 euros per month: 400 to 800 euros total savings, of which 250 to 500 euros in life insurance (DCA)
• Net income of 6,000 euros per month: 600 to 1,200 euros total savings, of which 400 to 800 euros in life insurance (DCA)

The key is finding an amount you can maintain over the long term without difficulty. A DCA of 150 euros per month maintained for 25 years is infinitely more valuable than a DCA of 500 euros per month abandoned after 2 years due to cash-flow pressure.

Define the split across vehicles

Your monthly contribution should match your target allocation. If your allocation is 40% euro fund / 60% unit-linked, each 300-euro contribution should be split as 120 euros on the euro fund and 180 euros on unit-linked.

Example split for a balanced profile (300 euros per month):

• Euro fund: 120 euros (40%)
• MSCI World ETF: 90 euros (30%)
• Emerging-markets ETF: 30 euros (10%)
• SCPI: 45 euros (15%)
• Bond fund: 15 euros (5%)

Example split for a dynamic profile (300 euros per month):

• Euro fund: 30 euros (10%)
• MSCI World ETF: 150 euros (50%)
• Emerging-markets ETF: 45 euros (15%)
• European small-cap ETF: 45 euros (15%)
• SCPI: 30 euros (10%)

The dynamic profile is particularly suited to younger savers (under 40) with an investment horizon of over 15 years. The balanced profile is better adapted to savers approaching retirement or with moderate risk tolerance.

Choose the optimal frequency

Monthly is the most common and most effective frequency for smoothing risk. It matches the natural rhythm of income and provides 12 entry points per year. Quarterly is acceptable if your monthly budget is too tight for meaningful contributions: it is better to invest 300 euros per quarter than 100 euros per month if the policy's minimum is 100 euros. Semi-annual or annual frequency should be avoided as it does not smooth entry risk sufficiently.

Optimising your DCA strategy over the long term

Gradually increase your contributions

Each year, increase your contributions by 3% to 5% to keep pace with inflation and the natural progression of your income. Going from 300 to 310 euros per month may seem trivial, but over 20 years, this progressive increase represents tens of thousands of euros in additional capital thanks to the compounding snowball effect.

If you receive a significant pay rise, an exceptional bonus or a promotion, that is the ideal time to raise your DCA. The goal is for your savings to grow at the same pace as your income, or even faster.

Reinforce during sharp downturns (opportunistic DCA)

If markets undergo a major correction (decline of more than 20% from the latest high), you can consider an exceptional contribution to reinforce your position. This is when prices are most attractive and every euro invested has the greatest potential for future gain.

For example, during the March 2020 Covid-related crash, markets lost over 30% in a few weeks. Savers who made an exceptional contribution at that point benefited from a spectacular rebound of over 50% in the following 12 months. This approach, which can be called "opportunistic DCA," effectively complements regular DCA.

Never stop your contributions

The biggest mistake -- the one that destroys the most value -- is stopping standing orders during a market downturn. This is precisely the moment when DCA creates the most value, because you are buying units at a discount. Every unit bought during a crash is a future source of significant gain when markets recover.

Resist the temptation to stop everything and maintain your contributions no matter what. If your financial situation requires it, reduce the amount rather than suspending contributions entirely. Even 50 euros per month during a crash is better than zero.

The 20- and 30-year projection: the power of time

Here is the power of standing-order contributions over long periods, depending on the monthly amount and the horizon:

These projections illustrate the combined power of regular investing and compound interest. With 500 euros per month over 30 years at an average 7% return, you could accumulate over 600,000 euros from 180,000 euros of contributions. Compound interest alone generates 429,000 euros of gains -- more than double your total outlay.

The difference between 5% and 7% annual return may seem modest, but over 30 years it represents nearly 200,000 euros of difference for a 500-euro monthly contribution. That is why the choice of vehicles (equity ETFs rather than euro fund over the long term) and fee control (online policies rather than traditional bank contracts) are so critical.

Setting up your DCA today: a 5-step action plan

1. Open a suitable policy: choose a no-entry-fee policy such as Linxea Spirit 2, Lucya Cardif or Boursorama Vie. The application can be done online in under 15 minutes.

2. Define your target allocation: based on your age, horizon and risk tolerance. For a saver under 40 with a horizon of more than 15 years, an allocation of 80% to 90% unit-linked (mainly ETFs) is perfectly rational.

3. Set up your standing orders: choose a sustainable amount and a deduction date that aligns with your pay date (ideally 2 to 3 days after).

4. Set annual reminder alerts: once a year, check that your allocation still matches your target and increase your contributions by 3% to 5%.

5. Forget about your policy the rest of the time: DCA works best when you do not intervene. Let time and compound interest do their work.

Progressive saving in life insurance is the most suitable strategy for the majority of French savers. Simple to set up, fully automatable and psychologically comfortable, it enables you to build significant wealth over the long term without requiring any particular financial expertise or time spent monitoring markets. What matters most is not the amount you invest each month, but the fact that you start and never stop.