In 2023, household expenditure on sponge cakes (Kasutera) in Japan stood at an unspecified reference point. Forecasted data for 2024-2028 indicates a gradual decline, with values decreasing each year from 662 Yen in 2024 to 628 Yen in 2028, translating to a year-on-year decrease of approximately 1.36%. The Compound Annual Growth Rate (CAGR) over this five-year period is approximately -1.32%, showing a steady downward trend in expenditure.

Future trends to watch for include:

Potential shifts in consumer preferences towards healthier or alternative dessert options.
Market influences such as macroeconomic factors or changes in consumer income that could further impact spending on traditional desserts.
Innovations or marketing strategies by Kasutera producers that might counteract the decreasing trend.