Funding Trajectories in SaaS Start-Ups: A Cross-Vertical Sectoral Analysis

Venture financing in Software-as-a-Service (SaaS) is often treated as a uniform process, yet sector economics, regulation, and talent requirements vary widely across markets. Leveraging data of SaaS start-ups founded between 2015 and 2024, we classify each firm into one of eight dominant verticals and examine three financing dimensions based on literature review: depth (capital raised), progression speed (probability of advancing from Seed to later-stage rounds), and capital efficiency (funding per employee). Out of data from 21,818 startups, the Marketing/Sales vertical shows relatively low late-stage progression; only 7% of these startups exceed four funding rounds and exhibits moderate capital efficiency (about USD66k in funding per employee). An ordinal-logit model, benchmarked to DevOps & IT Ops, finds that FinTech ventures are 43% more likely to reach Series C+ than their DevOps peers, while E-commerce & Retail lag. The results provide founders with sector-specific runway benchmarks, help investors calibrate follow-on reserves, and alert policymakers to potential funding gaps in socially vital but capital-starved verticals. Limitations include a focus on associations rather than causal mechanisms; future work should link financing patterns to operating performance and regional ecosystem effects.