National Day week is reliably the cheapest week of the year to eat fast food in Singapore, and August 2026 is no exception — but the deals are lopsided. Most of them expire the moment the long weekend does.
The one that doesn't is Burger King's. Its King Deals e-coupon set runs until 4 October 2026, which makes it the only thing on this page still worth having on your phone in September. The discounts are also the deepest: $5 for 9pc BK Nuggets with an ice lemon tea (usually $13.15) is a 62% cut, and $6.95 for a Whopper with small fries undercuts every à la carte burger here. The catch is purely procedural — you have to enter the code (DL8, PM15 and so on) at the kiosk, in the app or on bkcoupons.sg. Nothing applies automatically.
McDonald's is the National Day play. Its 1-for-1s — Big Breakfast, vanilla cones — plus a $6 McSpicy meal run only from 4 to 10 August, deliberately covering National Day on Sunday 9 August and the public holiday in lieu on Monday 10 August. Alongside that sits the most interesting food on any fast-food menu this month: the Old Chang Kee collaboration, with a Curry Potato Chicken Burger from $9.20 and a Rendang Curry Beef Burger from $9.50.
Carl's Jr has the lowest combo price and the harshest catch. $8.90 for a Famous Star or Hand-Breaded Chicken Fillet combo sounds unbeatable until you read the allocation: only the first 10 customers each day at each outlet get it, the next 10 pay $9.90 and the last 10 pay $10.90. Thirty sets per outlet per day, ending 9 August.
MOS Burger is the quiet winner for regulars — two Deluxe Mushroom Wagyu Burgers for $10 every Monday and Tuesday, with no announced end date, so it survives long after the SG61 banners come down.
We have also included two entries that aren't deals at all, because knowing about them saves you time: Shake Shack has no islandwide discount running right now (its 1-for-1 ended in June, and the "weekly free treat" pages still surfacing in search are from SG60 in 2025), and Mom's Touch opens its first Singapore outlet on South Bridge Road on 14 August with FairPrice Group behind it.
### How we picked Every deal here was checked against the brand's own channels — Burger King's coupon artwork on bkcoupons.sg, McDonald's own campaign page, Carl's Jr's and MOS Burger's official promotion posters — rather than taken from aggregator listings. Where a promotion had no announced end date, we say so instead of guessing one. Prices are as published by each brand; items marked "++" add 10% service charge and 9% GST.









