To buy a Singapore-listed stock, you open a CDP account so the shares are registered in your own name, open a trading account with a licensed broker to place the order, link the two together, fund the trading account, and buy through the broker's app or website, with the shares settling into your CDP account two business days later.

I am writing this now because two real changes are landing on the Singapore market in 2026 that affect how much capital a first-time investor actually needs, and which account setup makes sense.

Firstly, from 5 October 2026 onwards, SGX is reducing the standard board lot - the minimum quantity you can buy in a single trade - from 100 units down to 10 units for shares priced between $10 and $100. Meanwhile, for shares priced above $100, it is down to 1 unit, starting with 11 of the most heavily traded counters.

Secondly, starting from 14 July 2026 onwards, some brokers are now allowed to hold client shares in a pooled custody account instead of individual CDP accounts.

They change how you will think about your first investments, so I have built them into the walkthrough rather than writing a generic explainer that ignores what is actually happening this year.

Before you place any order, you need four things in place.

None of them cost money on their own, and most Singapore citizens and permanent residents can complete all four in about a week if they apply through Singpass MyInfo.

Non-citizens and non-permanent residents can open a CDP account too, but expect a longer process, roughly 10 business days rather than 5, plus extra documents such as a passport or employment pass and a recent bank or tax statement.

CDP stands for the Central Depository, Singapore's official share registry, run by SGX. When your shares sit in your own CDP account, they are registered directly in your name, and you appear on the company's shareholder register.

In plain terms, that is like having your own name on the property title. A custodian or nominee account, which is what several low-cost brokers use instead. This works more like renting a safe deposit box at the broker, where the broker's name is on the box, and you trust them to hand over what is yours when you ask.

This distinction shifted in 2026. From 14 July 2026, SGX RegCo allowed brokers acting as depository agents to hold client shares in pooled, omnibus custody accounts rather than individual CDP accounts, closer to how many overseas brokerages already operate. SGX RegCo has said it will roll out enhanced investor safeguards and minimum service standards by the end of 2026, so that retail investors can still exercise shareholder rights such as voting or receiving corporate action notices under this model.

Until those safeguards are actually published, I would treat a direct, individual CDP account as the more conservative default for a first-time investor, and revisit that view once the details are out.

Here is the actual sequence, whether you end up going the CDP-linked route or the custodian route.

Until now, the SGX standard has been a board lot of 100 shares, meaning you could only buy in multiples of 100 unless you were prepared to trade in the thinner, less liquid odd lot market. For a stock like DBS priced around $65, a single board lot cost roughly $6,500, a real barrier for someone starting with a few hundred dollars.

That changes from 5 October 2026. SGX RegCo is cutting the board lot size for an initial batch of 11 heavily traded counters. They are chosen because together they represent roughly 35% of recent trading volume. Shares priced between $10 and $100 move to a 10-unit board lot, and shares priced above $100 move to a 1-unit board lot.

Using the same DBS example, that same stock would need only around $650 to buy a full lot once it is included in the reduced-lot list. SGX has said it will review which counters qualify every quarter and add more over time, and a counter that has already been included keeps its smaller lot size even if its price later drops below the threshold.

If you are starting small, it is worth checking whether your target counter already qualifies before you work out how much capital to set aside.

Once your account is funded, the mechanics inside most broker apps are similar. You search for the counter by name or ticker (SGX tickers are usually a short alphanumeric code, not the company's initials), choose buy or sell, choose an order type, enter quantity, and confirm.

A market order fills immediately at whatever price is currently on offer, which works fine for a liquid, actively traded counter but is riskier for a thin, illiquid one where the price can move against you between clicking and filling. A limit order only fills at your chosen price or better, which trades away certainty of execution for certainty of price.

Two costs sit on top of the share price itself: the broker's commission, usually either a flat fee or a percentage of trade value with a minimum charge, and small SGX clearing and trading fees that are typically built into your contract note automatically. GST does not apply to brokerage commission on SGX trades, though it can apply to platform or custody fees depending on the broker, so it is worth reading your broker's fee schedule rather than assuming.

Fees vary widely between the traditional CDP-linked brokers and the newer custodian brokers, and the gap is large enough that it should factor into your choice.