Singapore’s largest banks sustain heavy tech investment as AI adoption accelerates and cost-to-income ratios improve.

The Scale of Tech Investment

DBS spent S$1.2 billion on technology in 2024, while combined technology spending across DBS, OCBC, and UOB exceeded S$3.6 billion annually, underscoring the industry-wide shift to platform banking and AI. The data points to a structural escalation in capital allocation toward digital infrastructure, cloud migration, and artificial intelligence that is reshaping how Singapore’s three largest lenders operate and compete.

DBS’s total income for the third quarter of 2025 reached S$5.9 billion, up 3% year-on-year, with a record net profit of S$2.95 billion. The bank’s sustained top-line growth suggests the technology spend is not merely defensive but is increasingly tied to revenue generation. For context, DBS’s S$1.2 billion tech expenditure in 2024 alone represented a significant portion of the combined S$3.6 billion-plus annual technology outlay across the Big Three—DBS, OCBC, and UOB—signalling that DBS continues to outpace peers in digital investment intensity.

Return on Investment: AI Value and Efficiency Gains

The business impact of DBS’s technology spending is measurable and accelerating. DBS’s AI/ML initiatives delivered over S$750 million in economic value in 2024, more than double the prior year’s figure. The bank now runs over 1,500 AI/ML models across more than 370 use cases, sending 1.2 billion personalised nudges to over 13 million customers across the region. In Singapore, customers who engaged with those nudges and used DBS’s AI-powered financial planning tool saved two times more, the bank reported in its 2024 annual report.

The cost-to-income ratio (CIR) data from the first half of 2025 provides further evidence that technology investment is translating into operational efficiency. DBS’s CIR improved to 38.5% in 1H 2025 from 41.3% a year earlier. OCBC and UOB posted CIRs of 38.9% and 38.9% respectively, demonstrating that the cost control benefits of tech investment are materialising across all three institutions.

Cost-to-Income Ratio (%) (%)Source: Orionmano Industries

Infrastructure Overhaul and Operational Risks

The depth of digital transformation at DBS is evident in the scale of its technology stack modernisation. As of 2024, 99% of DBS’s applications are cloud-native or cloud-enabled, a figure that puts it ahead of most global peers. The bank established its Platform Operating Model in 2018, bringing together personnel from across regions and roles to collaborate on 33 platforms that facilitate the sharing of data, resources, and reusable assets across the institution.

However, the rapid digitalisation has not been without setbacks. Online banking and payment services disruptions occurred at least three times within an 18-month period, drawing criticism from both consumers and the Monetary Authority of Singapore (MAS). The regulator mandated an additional S$1.6 billion in regulatory capital on DBS to ensure sufficient liquidity, signalling that the cost of operational resilience failures can be material and direct.

DBS’s technology expertise is also extending beyond its own operations. The bank arranged over S$20 billion in data centre financing across Asia-Pacific in 2025, as the AI boom drives an unprecedented surge in infrastructure demand. Amit Sinha, global head of telecommunications, media and technology at DBS, estimates that total capital expenditure of key data centre hyperscalers and their suppliers could reach US$1 trillion in 2026. This financing activity underscores how DBS’s deepening tech and cloud expertise is creating new revenue streams, even as it manages the operational risks inherent in its own digital transformation.

Competitive Positioning and Future Investment Outlook

The financial returns from technology investment are increasingly visible in comparative performance metrics. DBS leads peers with a return on equity (ROE) of 17.0% in 1H 2025, versus OCBC at 12.6% and UOB at 12.3%. The gap reflects DBS’s market leadership position, its strong digital franchise, and its proven ability to grow dividends—which it raised to S$0.75 per share in 3Q 2025, a year-on-year increase of 11.1% in ordinary dividends.

Not all banks are showing uniform efficiency gains. OCBC’s CIR increased to 38.9% from 37.5% a year earlier, reflecting ongoing investments in digital infrastructure and human capital that have yet to fully translate into operating leverage. UOB, however, recorded the most significant improvement, reducing its CIR to 38.9% from 41.9% in 1H 2024, driven by disciplined expense management and steady income growth.

The Big Three all reported strong profitability in 2024, powered by robust fee income growth led by wealth management. DBS’s wealth management fee income grew 45% year-on-year, with total net fee income rising 23%—more than twice the pace of peers. Moody’s Ratings expects the banks’ profitability to remain broadly stable in 2025, with a modest decline in net interest margins offset by mid- to high-single-digit loan growth and robust fee income. Credit costs are expected to remain low, with provisions averaging just 20 basis points of gross loans in 2024.

With combined tech spend likely to remain elevated as AI, cloud, and data centre financing expand, the three banks’ focus on efficiency will face continued regulatory scrutiny over operational resilience. The MAS has demonstrated a willingness to impose capital penalties for IT failures, and unscheduled service interruptions remain a key area of regulatory attention. For DBS, OCBC, and UOB, the challenge will be to sustain the pace of digital investment while ensuring that infrastructure reliability keeps pace with innovation.