Automatic Switches in Assurance Vie: A Complete Guide

Automatic switches (arbitrages automatiques) are management options available on most multi-support assurance vie contracts. They allow you to pre-program certain transactions that will be executed automatically when predefined conditions are met. The concept is simple: you define rules in advance and the insurer applies them mechanically, without you needing to monitor markets on a daily basis or make real-time decisions.

These options are often free on online contracts (Linxea Spirit 2, Linxea Avenir 2, Lucya Cardif, Boursorama Vie, Fortuneo Vie) and the switches triggered do not carry any fees. Despite this, they remain underused by savers: fewer than 15% of self-managed contracts activate them. This is unfortunate, because they provide an effective safety net against the behavioral biases that destroy value for individual investors.

The Four Main Types of Automatic Switches

1. Gain Locking (Securisation des plus-values)

How it works: when the gains on a unit-linked fund (unite de compte) exceed a threshold that you set in advance (for example, +10%, +15%, or +20%), the gains exceeding that threshold are automatically transferred to the fonds euros. This crystallizes your profits and protects them from a potential market reversal.

Concrete example with Vincent, 42, logistics manager in Strasbourg:

Vincent holds 30,000 euros on Linxea Spirit 2, with 15,000 euros invested in the Amundi MSCI World ETF. He activates gain locking with a threshold of +15%.

• In January, his ETF position is worth 15,000 euros (purchase price).
• In September, after a strong bull run, the position reaches 17,400 euros (+16%). The threshold of +15% is exceeded.
• The insurer automatically switches 2,400 euros (the gains) to the fonds euros Spirica.
• Vincent now holds 15,000 euros in the MSCI World ETF (back to his purchase basis) and 2,400 euros added to his fonds euros.

If markets subsequently drop 20%, Vincent's ETF falls to 12,000 euros. Without gain locking, his total position would be 13,920 euros. With gain locking, he has 12,000 + 2,400 = 14,400 euros. The gain locking saved him 480 euros, and his crystallized gains in the fonds euros are permanently safe.

Best suited for: investors wanting to protect gains during bull markets without selling their positions entirely; those who tend to let their profits run too long and regret it after a correction.

Recommended thresholds: +10% to +15% for moderate investors; +20% to +25% for long-term, growth-oriented investors. Setting the threshold too low (below +5%) would trigger frequent switches and prevent you from fully capturing upward trends.

2. Stop-Loss (Limitation des pertes)

How it works: when the value of a unit-linked fund drops below a threshold that you define (for example, -10% or -15% from the purchase price or from a reference price), the position is automatically switched to the fonds euros. This limits your losses and prevents further erosion of capital.

Concrete example with Sandrine, 55, close to retirement:

Sandrine holds 50,000 euros on Boursorama Vie, with 20,000 euros in a European equity OPCVM. She activates a stop-loss at -10%.

• In March, her OPCVM position drops to 18,000 euros (-10%). The stop-loss triggers.
• The 18,000 euros are automatically switched to the fonds euros Euro Exclusif.
• If the OPCVM subsequently drops another 15% (to 15,300 euros from its original value), Sandrine has been protected: her capital remains at 18,000 euros in the fonds euros.

Caution: stop-loss can lock in losses during temporary corrections. If markets bounce back quickly after the trigger, Sandrine will have sold at the bottom. This is why stop-loss is particularly suited for investors approaching their savings goals (retirement, property purchase) who cannot afford significant losses, and less suited for young investors with a 20-year horizon.

Recommended thresholds: -10% for cautious investors; -15% to -20% for balanced or dynamic profiles. Below -5%, the option would trigger too frequently and generate unnecessary switches.

3. Automatic Rebalancing (Reequilibrage automatique)

How it works: periodically (quarterly, semi-annually, or annually depending on the contract), the insurer automatically adjusts the allocation back to the target weights you initially defined. This mechanical discipline forces a "buy low, sell high" approach.

Concrete example with Thomas, 38, civil engineer in Nantes:

Thomas has 60,000 euros on Linxea Spirit 2 with a target allocation of 40% fonds euros / 40% MSCI World ETF / 20% SCPI. He activates annual rebalancing.

Initial allocation:

• Fonds euros: 24,000 euros (40%)
• MSCI World ETF: 24,000 euros (40%)
• SCPI: 12,000 euros (20%)

After one year (equities +20%, SCPI +5%, fonds euros +3%):

• Fonds euros: 24,720 euros (36.3%)
• MSCI World ETF: 28,800 euros (42.4%)
• SCPI: 12,600 euros (18.5%)
• Total: 68,040 euros (drift from target)

Automatic rebalancing switches:

• Sells 1,584 euros of MSCI World ETF
• Buys 2,496 euros of fonds euros and 1,008 euros of SCPI
• Result: fonds euros 27,216 euros (40%), ETF 27,216 euros (40%), SCPI 13,608 euros (20%)

Thomas has mechanically sold part of his equity gains (bought expensive) and reinvested in fonds euros and SCPI (relatively cheaper). Over multiple cycles, this discipline generates an estimated 0.3% to 0.5% of additional annualized return according to academic studies by Vanguard and Morningstar.

Best suited for: all self-managed investors who want to maintain their target allocation without manual intervention.

4. Progressive Investment (Investissement progressif)

How it works: a predefined sum is gradually transferred from the fonds euros to unit-linked funds over several months. This provides the benefits of DCA (Dollar Cost Averaging) for investors who have deposited a large lump sum into the fonds euros.

Concrete example with Philippe, 48, who receives a 120,000 euro inheritance:

Philippe deposits 120,000 euros entirely in the fonds euros of Linxea Spirit 2. He then activates progressive investment: 10,000 euros per month will be automatically switched from fonds euros to MSCI World ETF over 12 months.

• Month 1: 10,000 euros switched at ETF price of 100
• Month 2: 10,000 euros switched at ETF price of 95 (he buys more units)
• Month 3: 10,000 euros switched at ETF price of 88 (even more units)
• ...and so on for 12 months

After 12 months, Philippe's 120,000 euros are fully invested at an average price, smoothing out entry-point risk. Meanwhile, the capital waiting in the fonds euros earned the guaranteed fonds euros return.

Best suited for: savers who have received a large sum (inheritance, property sale, bonus) and want to invest it in markets without the timing risk of a single lump-sum investment.

How to Activate Automatic Switches

On the Main Online Contracts

The process is generally straightforward and accessible from your online client area:

Recommended Configuration for a Balanced Profile

For a balanced investor (40% fonds euros / 40% equities / 20% real estate), here is a recommended setup:

1. Gain locking at +15%: automatically secures equity gains exceeding 15%
2. Stop-loss at -15%: limits losses on each UC line if it drops more than 15%
3. Annual rebalancing: brings the allocation back to the 40/40/20 target once a year
4. These three options work together: gain locking and stop-loss handle extreme scenarios, while rebalancing maintains the structural allocation

The Limitations and Risks of Automatic Switches

Risk of Selling at the Bottom (Stop-Loss)

The most significant risk of stop-loss is selling during a temporary correction that quickly reverses. In March 2020 (Covid crash), an investor with a -15% stop-loss on a global equity ETF would have been automatically switched to fonds euros after the 15% decline. The market then recovered fully within five months. The investor would have missed the entire recovery.

To mitigate this: set stop-loss thresholds wider (at least -15% to -20%) and consider whether your investment horizon truly requires stop-loss protection.

Risk of Excessive Gain Locking

Setting the gain-locking threshold too low (e.g., +5%) means constantly switching small gains to the fonds euros. Over a long period, this truncates upward potential and forces you to always re-enter positions at higher prices. Over a 10-year horizon, this can significantly reduce cumulative returns.

Rebalancing in a Sustained Bull Market

In a sustained bull market, automatic rebalancing systematically sells the winners (equities) to buy the underperformers (fonds euros, bonds). While this is prudent risk management, it mechanically reduces total returns versus a buy-and-hold approach. Over the 2019-2024 period, a portfolio rebalanced annually underperformed a static portfolio by approximately 1-2% cumulatively, because equities consistently outperformed.

Tax Implications

In assurance vie, switches (arbitrages) between funds within the contract are not taxable events. This is a major advantage of the assurance vie wrapper. There are no capital gains taxes triggered by automatic switches, unlike in a standard brokerage account (compte-titres). This makes automatic switches particularly tax-efficient.

Automatic Switches vs Managed Allocation (Gestion Pilotee): What is the Difference?

Automatic switches are best seen as a middle ground between fully active self-management and fully delegated managed allocation. They provide rules-based discipline without the cost of a management mandate, but they lack the adaptive judgment of a professional manager who can make nuanced tactical decisions.

Who Should Use Automatic Switches?

Highly recommended for:

• Self-managed investors who want guardrails against emotional decision-making
• Investors in their 50s and 60s who need to protect accumulated capital while staying invested
• Savers with a balanced allocation (mix of fonds euros and UC) who want to maintain their target mix automatically
• Anyone who has invested a large lump sum and wants to enter markets gradually

Less relevant for:

• Very long-term investors (20+ years) with 100% equity allocations who can tolerate short-term volatility
• Investors in fully managed allocation (gestion pilotee), where the management company already handles these decisions
• 100% fonds euros investors, who have no unit-linked positions to manage

Key Takeaways

• Automatic switches are free on most online contracts (Linxea Spirit 2, Lucya Cardif, Boursorama Vie) and the switches triggered carry no fees
• The four main options (gain locking, stop-loss, rebalancing, progressive investment) address different investor needs and can be combined
• Automatic rebalancing is the most universally useful option, generating an estimated 0.3-0.5% of additional return per year through disciplined "buy low, sell high" behavior
• Stop-loss protects against catastrophic losses but risks selling at temporary bottoms; set thresholds wide enough (-15% to -20%)
• All switches within assurance vie are tax-neutral, making them highly efficient compared to a standard brokerage account
• Fewer than 15% of self-managed contracts activate these options; using them puts you ahead of the majority of investors

Disclaimer

The information presented in this article is provided for informational and educational purposes. It does not constitute personalized investment advice. Past performance is not indicative of future results. All investments in unit-linked funds carry a risk of capital loss. Before making any investment decision, we recommend consulting a qualified financial advisor.