Cheapest Supermarket in Singapore 2026: Sheng Siong vs FairPrice vs Giant vs Cold Storage — and Where Your CDC Vouchers Actually Stretch Furthest

If you only optimise one thing about your grocery bill, make it this: buy your rice, oil, eggs, noodles and detergent at Sheng Siong. Independent 2026 price comparisons repeatedly put Sheng Siong below FairPrice and Cold Storage on equivalent staple items — the commonly cited range is 8-35%, which on a $400-500 monthly basket for a family of four works out to roughly $30-60 a month saved versus FairPrice Xtra. Treat those third-party figures as directional rather than gospel; the pattern is consistent even if the exact percentage is not. WHAT'S RUNNING NOW: the 7th Month Promotion runs 24 July to 10 September 2026 across all outlets. Organic & Healthier Choice and the Beauty Fair both ran 7-20 August. Seniors get a 4% discount every day — Sheng Siong extended that scheme through 2026. And DBS/POSB cardholders get $3 off selected eggs and $3 off selected rice every Saturday until 29 August 2026, capped at one redemption per item per customer per day, with Sheng Siong refreshing redemption stock monthly rather than weekly. VOUCHERS: CDC Vouchers and SG60 Vouchers are accepted at every Sheng Siong outlet islandwide. OUTLETS: 68 stores, overwhelmingly in HDB estates. BEST FOR: the weekly staples run, and households spending down the supermarket half of their CDC vouchers.

FairPrice is not the cheapest chain on a like-for-like basket, but it is the best default for most households because of coverage and the sheer number of discount schemes running at once. THE BIG ONE: FairPrice Group has frozen the price of more than 500 daily essentials from 1 June to 31 August 2026 across all FairPrice outlets — housebrand rice, cooking oil, eggs, fresh and frozen poultry and meat, milk, pantry staples and household detergents. That is a genuine hedge against mid-year price moves, and it is the reason a FairPrice housebrand basket often lands close to Sheng Siong's. ALSO RUNNING: daily discount schemes for seniors, Pioneer and Merdeka Generation members and CHAS Blue and Orange cardholders have been extended to the end of 2026. Linkpoints can be redeemed from 99 points for $0.99, which is the most useful redemption tier most members never use. WORTH KNOWING: the $6 Return Voucher for every $61 spent ran 6-16 August and has now closed — the vouchers themselves stay valid to 31 August, so dig them out of your wallet. VOUCHERS: CDC and SG60 Supermarket Vouchers are accepted at FairPrice, FairPrice Finest and FairPrice Xtra, but NOT at standalone Unity pharmacy stores. FORMATS: FairPrice, Finest, Xtra, Shop N Save and online. BEST FOR: the household that wants one store to cover everything.

Giant's base prices sit between Sheng Siong's and FairPrice's, but nobody else in Singapore is currently handing out this much for simply holding the right card on the right weekday. THE CHAS DEAL: eligible Blue and Orange CHAS cardholders get their in-store discount doubled from 3% to 6% — Blue CHAS every Thursday, Orange CHAS every Friday — from 30 July to 28 August 2026. If your household holds a CHAS card, moving the big shop to a Thursday or Friday is free money. THE SATURDAY DEAL: $3 off selected eggs and $3 off selected rice every Saturday with any DBS/POSB credit or debit card, 18 July to 29 August 2026. No minimum spend, capped at one redemption per item per customer per day, and Giant refreshes redemption stock weekly on Saturdays. Buy both in one transaction and it is $6 off. THE CATCH: that Saturday discount is not valid with other promotions, discounts, vouchers — or CDC vouchers. So do the eggs-and-rice run on card, and spend CDC vouchers on a separate receipt. ALSO: Super Savings runs weekly with selected lines up to 52-63% off, plus housebrand and No Brand value ranges. BEST FOR: CHAS and DBS/POSB households, and bulk dry goods.

Prime is the heartland chain most price-comparison articles skip, and that is a mistake if there is one near you. Its business model is a rolling four-day WOW! Deals window rather than a month-long catalogue, which means the discounts are deeper but the window is short — you have to actually check before you go. WHAT THE PRICES LOOK LIKE: the most recent WOW! Deals run (14-17 August) had Prime Choice vegetable cooking oil 2L at $4.80, 500g Canadian cherries at $9.95, three Australian navel oranges for $4.95, whole Norwegian salmon at $1.59 per 100g, Sunnygold chicken fillet or mid-joint wings at 2 for $5.95, and Gochi-So Shokudo frozen chestnut pork slices at 2 for $11.50. A new four-day window opens most weeks. RUNNING NOW: a seafood promotion to 20 August 2026 covering cod, salmon and clams. THE CATCH: promotions are valid at participating Prime Supermarket outlets only and are explicitly NOT applicable at Prime Kiosk, and stock varies by outlet — the cherries in particular tend to go on day one. BEST FOR: fresh produce, meat and seafood if you can shop on the chain's schedule rather than your own.

Be honest about what Cold Storage is for. Third-party 2026 price comparisons put a Cold Storage staples basket roughly 25-35% above the cheapest chains, so if you are buying housebrand rice and cooking oil here, you are paying a premium for the address. Where it earns its keep is the imported range — European cheeses, proper baking supplies, imported produce, specialty meat cuts and a chilled section the heartland chains do not attempt. THE DEAL THAT CHANGES THE MATH: $7 off a minimum $80 spend on weekends when you pay with a DBS Visa Debit Card or POSB Everyday Card, at selected Cold Storage and CS Fresh stores, from 25 July all the way to 18 October 2026. That is one of the longest-running supermarket card offers on the calendar right now, and on an $80 basket it is effectively 8.75% off. Note it is weekend-only and card-specific — a general DBS credit card is not the same thing as a DBS Visa Debit Card. HOW TO USE IT PROPERLY: do the staples run at Sheng Siong or Giant, then do one consolidated $80+ weekend shop at Cold Storage for the imported items you actually cannot get elsewhere. BEST FOR: imported groceries, baking, cheese and entertaining.

Donki is not where you do the weekly staples run — it is where Japanese produce, ready-to-eat bentos, sashimi and snacks are genuinely competitive against specialty importers. It is also the chain with the most promo churn: several campaigns run simultaneously and most reset monthly. WHAT'S ON NOW: the SG61 $61 best-sellers bundle bundles nine popular Donki products with an exclusive cooler bag, stated value $85, so about $24 saved — 17 to 31 August 2026. The Meat Festival Sale runs all month, 1-31 August, with A5 Wagyu, Shirobuta pork and other cuts discounted by up to $10.30 on selected items at all outlets while stocks last. Takoyaki is $5.90 a pack, down from $6.90, also 17-31 August. The Wagyu Feast (roast beef sushi, rolls and rice bowls) runs 1 July to 31 August at most outlets, and Mango Madness pours limited Japanese mango drinks at participating Donki Bars through August. WORTH KNOWING: the network is around 17 stores and has been shifting — the Downtown East outlet closed in March 2026 and HarbourFront Centre closed in July 2026, so check the store list before making a trip. BEST FOR: Japanese groceries, ready meals and late-night runs.

Scarlett has quietly grown into one of Singapore's largest grocery networks by store count — 39 outlets — and it competes on a completely different axis to the mainstream chains. Because it imports directly from China without middlemen, its snacks, instant noodles, sauces, seasonings, frozen dumplings, beverages and daily essentials routinely undercut what the same or comparable products cost at FairPrice or Cold Storage. If your pantry leans towards Chinese cooking, this is where the savings are largest in percentage terms. WHAT IT IS GOOD FOR: confectionery, noodles, beverages, alcohol, frozen food, sauces, seasonings and daily essentials. WHAT IT IS NOT: a full-basket replacement — the fresh produce, meat and Western grocery ranges are thin compared with a Sheng Siong or an Xtra, so treat Scarlett as a top-up stop rather than the main shop. OPEN 24 HOURS: four outlets — People's Park Complex, Bedok, Geylang Road and AMK 710A. The rest run varying hours; Century Square, for instance, is 9am-11pm. Scarlett runs rotating weekly fresh-fruit and grocery deals rather than a fixed promo calendar, so check the store or its site before a special trip. BEST FOR: Chinese snacks, sauces and instant noodles at the lowest per-item price in town.

One shop, 145 Syed Alwi Road, open 24 hours a day every day of the year including public holidays — and the second-floor grocery section is a full supermarket that beats the mainstream chains on a lot of lines. The draw is twofold: competitive everyday pricing on ordinary groceries (a 24-can carton of Coca-Cola around $12.90, 1.5L bottled water around $0.70), and an imported range — South Asian spices, ghee, pulses, specialty rice, organic lines and a fresh seafood counter running round the clock — that no supermarket chain here matches. There is no promo calendar to track; the pricing is simply low all the time, which makes it the one entry on this list you can shop without checking a catalogue first. THE TRADE-OFFS: it is a single location in Little India, so factor in the trip; weekends and evenings are genuinely crowded, so go on a weekday afternoon or after 8pm; and set aside real time — most people underestimate how long a full Mustafa shop takes. The gold section takes its last transactions at 9.45pm, but groceries never close. BEST FOR: bulk buying, South Asian and imported ingredients, and anyone whose shopping window is the middle of the night.