SGX board lot calculator

By MoneyBees

Work out what one SGX board lot costs now that lots fall to 10 shares above S$10 and 1 share above S$100 from 5 Oct 2026, with fees as a share of a small trade.

Frequently asked questions

What is a board lot on SGX?

The minimum number of securities you can buy or sell in a single trade on SGX's ready market. Most counters have traded in lots of 100.

What changes on 5 Oct 2026?

SGX cuts the standard board lot from 100 units to 10 for counters priced above S$10 and up to S$100, and to 1 unit for counters above S$100. The first round covers 11 stocks priced above S$10, all moving to 10-share lots.

How does SGX decide which counters get a smaller lot?

It checks whether the last traded or closing price has stayed in the range for the previous six months, or is likely to. SGX reviews every quarter: the next cuts are announced in January 2027 and take effect in February 2027.

If the price falls later, does the lot go back to 100?

No. SGX says a reduced board lot will not revert, even if the price later falls.

Which securities does the change cover?

Ordinary shares, REITs, business trusts, stapled securities, company warrants and depositary receipts. ETFs already trade in lots of 1 unit, and structured warrants and DLCs stay at 100.

Can I still buy fewer shares than a board lot?

Yes, in SGX's unit share market for odd lots. A counter whose lot falls to 1 unit is no longer traded there.

What fees does SGX charge on a trade?

A trading fee of 0.0075% and a clearing fee of 0.0325% of the traded value, plus 9% GST. SGX sets no minimum or cap on them. Your broker's commission and any minimum are set by the broker.

Are small lots worth buying with a minimum commission?

Check the fee as a share of the trade. On a S$400 lot, a S$2 minimum commission plus SGX fees and GST takes about 0.59%, against about 0.13% on a S$4,000 lot at 0.08%. SGX also notes that commissions limit the benefit for small trades.

Do the tiers work the same for US dollar counters?

Yes, with US$10 and US$100 in place of S$10 and S$100.

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