Retiring with $1 million in ASX shares is a big goal, but I do not think it needs to be difficult.
The key is starting early enough, investing regularly, and giving compounding enough time to work. For this example, let's assume someone is starting at age 35 and wants to build a $1 million portfolio by age 67.
That gives them roughly 32 years.
If an investor achieved an average annual return of 9%, they would need to invest around $6,000 per year to reach $1 million by age 67. That is about $115 a week.
Those returns are not guaranteed, of course. Some years will be negative, and some years will be much stronger. But the exercise shows something important: the target becomes much more achievable when time is doing a lot of the heavy lifting.

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I'd start with broad exposure
If I were building towards $1 million, I would not try to make the whole plan depend on picking the perfect stock.
That is too much pressure.
I would start with a diversified core. This could include broad ASX exchange-traded funds (ETFs) that provide exposure to Australian shares, global shares, or the US market.
A broad ETF helps reduce the risk of one company doing too much damage to the overall plan. It also makes it easier to stay invested because the portfolio is not relying on a single business, sector, or theme.
I think that is important over a 30-year journey.
I'd add quality shares over time
Once the core is in place, I would add individual ASX shares where I see quality, growth, or income potential.
That could include blue-chip shares, dividend shares, healthcare leaders, technology businesses, infrastructure stocks, or high-quality retailers.
The exact names could change over time, but right now it might include Goodman Group (ASX: GMG), Netwealth Group Ltd (ASX: NWL), and Car Group Ltd (ASX: CAR).
I want to look for companies with strong market positions, good balance sheets, capable management, and the ability to grow earnings over many years.
Not every pick will work. That is why diversification matters.
I'd keep investing through bad markets
The hardest part of this plan is not the maths. It is behaviour.
There will almost certainly be bear markets, recessions, interest rate scares, inflation worries, and company disappointments along the way.
I would expect that. But if the goal is to build a $1 million ASX share portfolio over decades, market falls can become opportunities rather than reasons to stop.
Regular investing means buying through good markets and bad markets. Over time, that can help smooth the entry price and keep the plan moving.
Foolish Takeaway
A $1 million ASX share portfolio will not appear overnight.
But starting at 35 gives an investor something very valuable: time. With regular contributions, a sensible return assumption, and the discipline to keep going through market cycles, the target can become far more realistic than it might first seem.
The best plan is not necessarily the cleverest one. It is the one that an investor can repeat for years without getting shaken out by every market wobble.