Diet Soft Drinks Market Size & Share Analysis - Growth Trends and Forecast (2027 - 2032)

Market Trends and Insights

Rising Consumer Preference for Zero-Sugar and Reduced-Calorie Beverages

Zero-sugar branding is helping beverage companies reach consumers who had rejected the older diet label. Pepsi Zero Sugar recorded year-to-date sales growth above 30.8% in 2025 and reached more than 1 million additional households, according to PepsiCo. PepsiCo also reported that more than 60% of participants preferred Pepsi Zero Sugar in every one of its 34 U.S. Pepsi Challenge markets^[1]. This response supports wider zero-sugar placement in retail assortments and promotional activity, while the diet soft drinks market benefits when lower-calorie products are presented as everyday choices rather than as restricted alternatives because the framing can encourage trial and give retailers a reason to place zero-sugar products beside mainstream soda brands across grocery, convenience, and foodservice channels.

Expansion of Government Sugar Taxes and Beverage Reformulation Initiatives

Sugar taxation is changing the relative cost of full-sugar and lower-sugar drinks. The Global Food Research Program recorded 98 national beverage taxes and 16 subnational taxes as of April 2025. In November 2025, the UK government announced a strengthened Soft Drinks Industry Levy that lowers the threshold to 4.5g of sugar per 100ml and extends coverage to milk-based and plant-based sugary drinks from January 2028^[2]. The UAE announced a volumetric excise model that takes effect in 2026 and links tax liability to sugar content. These policies favor companies that can reformulate products and manage ingredient changes at scale, because large suppliers can spread the cost of recipe work, labeling changes, and retailer communication across broad portfolios while smaller producers may struggle with differing tax thresholds and implementation dates, influencing consumer prices and the speed of product replacement on shelves.

Expansion of Functional Zero-Calorie Formulations

Functional ingredients are giving lower-calorie sodas a role beyond thirst and calorie control. PepsiCo launched Pepsi Prebiotic Cola across the United States in February 2026 with 30 calories, 3g of prebiotic fiber, and no artificial sweeteners. The launch shows that a major cola supplier views fiber-enhanced products as a viable extension of its portfolio. The diet soft drinks market can gain from these products because they provide a more specific reason to try a lower-calorie drink. Keurig Dr. Pepper reported net sales of USD 16.6 billion in 2025 and 11.9% growth in its U.S. Refreshment Beverages segment, supporting continued investment in zero-sugar innovation. The shift raises the value of formulation capability, ingredient sourcing, and clear product claims, as brands must ensure that added fiber, botanicals, or naturally derived sweeteners work with the desired flavor, shelf life, and pack format while remaining simple enough for shoppers to understand, creating an opportunity for companies that combine familiar taste with a relevant benefit.

Rising Demand for Naturally Sweetened Diet Soft Drinks

Concerns about artificial sweeteners are encouraging brands to consider plant-derived alternatives. Tate & Lyle and Manus introduced Yume M Stevia Sweetener in February 2026, using bioconversion at their Augusta, Georgia, facility. The company positions the ingredient around traceability and an Americas-based supply chain. Better-tasting stevia options can help manufacturers reduce the aftertaste that limited earlier formulations. This development supports the diet soft drinks market by giving suppliers another route to meet clean-label expectations. It also allows brands focused on natural positioning to compete without relying only on established cola recipes, since citrus, fruit, tea, and sparkling water products broaden the occasions addressed by the diet soft drinks market, and better sweetener performance can reduce the compromise between a lower-calorie recipe and an acceptable taste experience that influences repeat purchase.

Consumer Skepticism Toward Artificial Sweeteners

Consumer concerns about artificial sweeteners remain a constraint even when products meet regulatory requirements. The 2025 IFIC Food and Health Survey found that 27% of Americans had a positive view of low- and no-calorie sweeteners^[3]. A 2025 study of Saudi Arabian adults found that 61% accepted foods containing artificial sweeteners, while 44% also agreed that some sweeteners were unhealthy. This gap between use and confidence can lead shoppers to examine labels more closely or move to naturally sweetened products. Taste concerns can add to the challenge when alternative sweeteners leave an aftertaste. The diet soft drinks market, therefore, needs clear labeling, better flavor performance, and formulas that address perceived health concerns.

Substitution by Functional Drinks and Better-for-You Beverages

Prebiotic sodas, functional sparkling waters, and adaptogen drinks compete for the same consumers seeking lower-calorie refreshment. PepsiCo acquired Poppi in March 2025, placing a major beverage company behind a prebiotic soda brand. Coca-Cola launched Simply Pop in February 2025 as a prebiotic soda option. These moves show that large companies are broadening their portfolios beyond traditional diet soda. Functional drinks can offer calorie reduction together with claims related to fiber, energy, or wellness. The diet soft drinks market must respond with products that combine familiar taste, competitive pricing, and credible added benefits.

*Our forecasts treat driver/restraint impacts as directional, not additive. The impact forecasts reflect baseline growth, mix effects, and variable interactions.

Diet Soft Drinks Market Segment Analysis

Zero-calorie soft drinks held 63.23% of sales in 2026, giving them the leading position within the diet soft drinks market. Established cola brands support this position through broad distribution, consumer familiarity, and ongoing zero-sugar extensions in the diet-soft-drinks market. The change from diet branding to zero-sugar branding has also made these products more relevant to younger adult consumers. Keurig Dr. Pepper announced that its 2026 innovation program would include zero-sugar extensions across its major carbonated soft drink trademarks. Large beverage companies can leverage their bottling systems and relationships with retailers to maintain availability across stores and foodservice locations.

Low-calorie soft drinks are projected to grow at a 6.32% CAGR from 2027 to 2032. This segment allows brands to include modest amounts of calories while adding ingredients that consumers may value, such as fiber, botanical extracts, or fruit juice. Pepsi Prebiotic Cola illustrates this approach with 30 calories and 3g of prebiotic fiber. These products appeal to consumers who do not want a fully zero-calorie drink or artificial sweeteners. They also give manufacturers a way to distinguish a new product from standard zero-sugar cola. The diet soft drinks industry can use this segment to test formulations that bring together taste, ingredient transparency, and functional appeal.

Non-carbonated drinks accounted for 54.28% of sales in 2026. Their scale reflects demand for diet iced teas, enhanced waters, and other still drinks that suit everyday refreshment occasions. These products fit meals, work settings, and routine household purchases. Their broader use occasions provide a steady base for the diet soft drinks market, especially where consumers prefer familiar still beverages with meals. Non-carbonated products also offer manufacturers more room to develop products with fruit, tea, or botanical profiles. This variety can reduce reliance on a limited set of cola flavors.

Carbonated drinks are forecast to expand at a 6.68% CAGR through 2032. Flavor launches are an important part of this growth because they encourage repeat purchases and attract consumers who want variety. Coca-Cola expanded its U.S. and Canadian cherry portfolio in February 2026 with Coca-Cola Zero Sugar Cherry Float and the national return of Diet Coke Cherry. Carbonated products also benefit from premium single-serve occasions in restaurants, entertainment venues, and convenience retail. Their growth rate shows that familiar soda brands still have room to create demand through flavor, packaging, and zero-sugar positioning.

PET bottles held 48.65% of packaging sales in 2026, the largest share among the listed formats. The format suits single-serve purchases, multipacks, and price-sensitive retail channels. It also supports product sizes that make lower-calorie drinks easier to try without a high spending commitment. For the diet soft drinks market, PET bottles remain important in countries where small packs are central to daily refreshment purchases. Their lightweight nature helps suppliers manage distribution across large retail networks. PET also gives brands flexibility to offer products in several sizes for different consumption occasions.

PET bottles are also projected to record a 6.43% CAGR through 2032. This forecast reflects the continued use of smaller packs and the need for accessible price points in developing consumer markets. The format can support the trial of zero-sugar flavors before a consumer moves to larger multipacks. Manufacturers are likely to use PET across both mainstream and newer functional products because it is familiar to shoppers. Metal cans remain relevant for premium single serves and on-trade locations, but they do not displace PET’s broad retail role. Packaging choices will continue to affect how brands balance convenience, price, and product positioning in the diet soft drinks market.

Off-trade outlets represented 68.87% of sales in 2026. Supermarkets and other retail stores provide the refrigerated space, multipack options, and planned purchasing patterns that support high-volume sales. Convenience stores add important access for immediate consumption and single-serve carbonated drinks. This channel provides leading brands with broad visibility and supports promotional activity at the shelf level. The diet soft drinks market depends on off-trade distribution because consumers often purchase these drinks during routine grocery trips. Strong retailer relationships can also help brands protect space in the diet soft drinks market when new functional drinks enter the category.

On-trade channels are forecast to grow at a 6.79% CAGR from 2027 to 2032. Restaurants, cafés, hotels, and entertainment venues can place diet soft drinks within premium meals and social occasions. These venues give consumers an opportunity to try a new flavor or premium pack without buying a multipack. Placement in foodservice can later support repeat purchases in retail stores. Keurig Dr. Pepper’s stated approach of serving consumers across occasions reinforces the need for both at-home and away-from-home availability. A stronger on-trade presence can help brands build visibility beyond the traditional retail aisle.

Geography Analysis

North America Diet Soft Drinks Market

North America held 41.56% of sales in 2026, making it the largest regional market. The region has a mature retail distribution of zero-calorie beverages and long-standing consumer awareness of diet soda brands in the diet soft drinks market. The United States remains central because global brands use it to introduce new zero-sugar and functional products. Coca-Cola reported 14% global unit case growth for Coca-Cola Zero Sugar in the third quarter of 2025. Canada’s front-of-package nutrition labeling rules add pressure to provide clear product information and to reformulate. The diet soft drinks market in North America is supported by large bottling systems, strong brand awareness, and rapid product launches.

APAC Diet Soft Drinks Market

Asia-Pacific is projected to grow at a 6.41% CAGR from 2027 to 2032. Urban growth and rising disposable income are expanding the audience for packaged drinks in India, China, and South Korea. The region contains both markets where zero-sugar drinks are still developing and mature markets with established demand. Suntory renewed four All-Free products in Japan in January 2026 and added a sparkling Muscat of Alexandria product. These product changes show that even developed regional markets require frequent flavor and recipe updates. The diet soft drinks market has significant room to grow where affordable pack sizes, local flavors, and wider distribution improve access.

EMEA and South America Diet Soft Drinks Market

Europe remains an important regional bloc because tax policies and labeling expectations encourage reformulation. The strengthened UK levy creates a defined path for manufacturers to reduce sugar before the revised rules apply in 2028. South America offers demand potential as lower-sugar beverages become more visible to urban consumers. PAHO held a September 2025 workshop in Lima to support regional targets for reducing sweetened beverage consumption. In the Middle East and Africa, the UAE tax model rewards producers that reduce sugar content rather than simply absorb a flat tax. These regional differences require companies to adapt recipes, pack sizes, and price points to local rules and buying habits.