Answer
Usually yes — Singapore is one of the easier APAC markets for multi-entity notional pooling, including structures banks offer on a domestic and cross-border basis. That is the opposite default from mainland China (see can we do notional pooling in China?).
Why
Ordinary corporate remittances and FX conversion are generally unrestricted in Singapore, and major banks commonly support notional (balance compensation / interest optimisation) as well as physical cash pooling. Resident and non-resident participants may be allowed in the same structure depending on the bank product.
“Yes” still fails if:
- The bank will not onboard your entity mix or currencies
- Cross-guarantees / set-off documentation is incomplete
- Tax and transfer pricing on notional interest are not agreed
- You assume every ASEAN subsidiary can fund a Singapore header on the same rules Singapore itself uses
What to do
- Treat Singapore notional as a workable design assumption, then validate with the pool bank and local tax.
- Separate Singapore header liquidity from restricted-market onshore cash (China, and often tighter ASEAN corridors).
- For physical vs notional globally, see physical vs notional; use Singapore as an enabler, not a template for every country.
- Document interest allocation the same way you would for cross-border cash pooling elsewhere.