What Really Matters: An Evergreen Checklist for the Long-Term Investor

The world of financial media brings a new theme every month. Artificial intelligence changes everything. Oil will become scarce again. Bonds are dead. The Chinese market is cheap. The American market is overvalued. Each of these theses could have been true or interesting in its time — but none of them decided whether the average Czech investor aged 35 will have enough at 60. Other things decided that. Things that are boring, repetitive and significantly less mediagenic. Here is their list.

Lever number one: how much you save, not where you invest

This is the most uncomfortable truth of passive investing: fund selection, entry timing and sector allocation have less impact on the outcome over twenty years than the percentage of income you regularly invest. The maths is inexorable and yet overlooked.

Consider two investors (illustrative numbers for understanding the principle, not an investment forecast): investor A saves 5,000 CZK per month with an average annual return of 8%. Investor B saves 8,000 CZK per month with a return of 7%. After 25 years, investor B has a significantly larger portfolio — even with a lower return — simply because they put in more capital. A higher savings rate beat a better return.

The practical priority follows: before you worry about which ETF to invest in, optimise your savings rate. Every increase of 1,000 CZK per month has an impact in the range of hundreds of thousands of CZK over 25 years at a reasonable return. The choice between ETFs with TER 0.20% versus 0.25% is negligible by comparison. This is not an argument for ignoring costs — it is an argument for ordering priorities correctly.

Allocation: match between risk, horizon and psychology

Portfolio allocation — the share of equities, bonds and cash — is a decision that determines volatility and long-term return more than anything else. Yet many investors make it either intuitively (based on what they are currently seeing in the market) or not at all (I'll buy one ETF and that's it).

Basic logic: the longer your investment horizon and the greater your ability to ride out declines without selling, the higher the equity share can be. As the horizon shortens, shift allocation towards less volatile instruments — not because equities are worse, but because you won't have time to wait for recovery after a potential decline right before a planned withdrawal.

The key question when setting allocation: how much of a portfolio decline can you bear without the urge to sell? If a 30% decline causes you to lose sleep and sell, then 100% equity allocation is wrong — regardless of what theory recommends. A portfolio you can't hold psychologically is worse than a suboptimal one you stick to with discipline. This is an empirically supported conclusion from decades of behavioural research.

Costs: the only guaranteed negative component of return

Market return is uncertain. Inflation is uncertain. Geopolitics is uncertain. One thing is certain however: fees you will always pay, regardless of how markets behave. Therefore they deserve systematic attention — not obsessive, but regular.

• Fund TER: Annual management fee. A difference of 1% over 25 years on a million-CZK portfolio is approximately 250,000–350,000 CZK (depending on returns). Passive UCITS ETFs with TER 0.20% are available without any compromise on quality.
• Transaction costs: Bid-ask spread and broker commissions for buying. With regular DCA they are relevant — choosing a broker without or with low ETF transaction commissions adds up over a year.
• Tax costs: A distributing fund from whose dividends you pay tax every year is more expensive than the accumulating variant, where you are taxed only on sale — or not at all if you meet the three-year holding test.
• Hidden switching costs: Selling fund A and buying fund B incurs transaction fees, potential tax impact and timing risk. Switching funds without a clear structural reason is costly and usually unnecessary.

Behaviour in crisis: where twenty years are decided

A strategy written on paper is worthless if you abandon it at the first 30% decline. And that will come — historically on average once every 5–10 years, always unexpectedly and always with convincing arguments for why this time is different and why action is necessary.

Investor behaviour research consistently shows: the average investor underperforms the average fund they invest in — because they buy late (after good results) and sell early (at declines). Analytical firm DALBAR documents this annually and the numbers are depressing: the gap between fund return and the average investor's return in that fund is typically 1.5–3 percentage points per year. The fund earned, the investor didn't — because they were badly timed.

Practical defences:

• Automate DCA so it runs every month automatically without your decision — even with a 20% fund decline, purchases continue and you are averaging a lower price.
• Set a rule: on a decline of 20% or more, don't sell for 30 days. A calendar date as a protective period prevents impulsive selling.
• Limit access to the portfolio in turbulent periods — fewer logins to the broker app, fewer emotional decisions. Especially in the early days of a major correction.
• Remind yourself of historical data: every market decline in history has been overcome. Duration varied; the outcome was always the same. Those who held through 2008–2009 hit new highs by 2013. Those who held through 2020 hit new highs by 2021.

Annual review: what specifically to do once a year

Behavioural finance research shows that the less frequently an investor monitors the portfolio, the better they typically make decisions and the fewer impulsive transactions they make. Here is what to check specifically:

• Has your life situation changed — new child, new job, change in income or expenses, closer to retirement? If so, review the allocation.
• Does the current allocation still match intentions? If equities have strongly outgrown and represent 95% of the portfolio instead of the intended 80%, it is time to rebalance.
• Are costs at a level you are comfortable with? Is there a cheaper alternative with the same composition and domicile? Worth comparing once a year.
• Does the savings rate correspond to where you want to be in ten years? If income rose and savings rate stayed the same, here is the opportunity to raise the regular contribution.
• Do you have a sufficient cash reserve outside the investment portfolio? An emergency fund of 3–6 months of expenses should be outside the reach of markets — without this foundation the investment story is compromised, because in a crisis you will tap the portfolio out of necessity.

That is the full list. Everything else — sector rotations, new thematic ETFs, last year's performance — is relevant only if it changes the answers to these fundamental questions. Otherwise it is noise. How to build a portfolio from scratch can be found in a separate article. This is not investment advice. The index remains the starting point.