The wait between funding rounds is longer than it looks

The record

On 19 March 2025, Carta published a dedicated analysis of how long startups on its cap-table platform wait between priced financing rounds. Among companies raising a Series A in the fourth quarter of 2024, the median interval since their seed round was 774 days, about 2.1 years; in the fourth quarter of 2021, it was 420 days, about 1.2 years. Carta states the seed-to-Series-A wait is 84% longer than three years earlier, and the Series A-to-B gap was 97% longer over the same span. SaaS companies waited less time between rounds than the cross-sector median; fintech companies waited longer, with a seed-to-Series-A gap of 971 days, about 2.7 years, in the same quarter.

What the sources establish

Carta's own prior releases show the metric moving without a single straight line. Its Q4 2023 report, published 5 February 2024, put the median Series A-to-Series B gap at 784 days that quarter, called the longest interval on record at the time. Yet within that same quarter, the gap for Series A and C fundings actually fell, by more than 50 days for Series A. A later release, the Q2 2025 report published 18 August 2025, reported a different figure again: a median wait of 696 days between new rounds across all stages, up 5% both quarter over quarter and year over year. Together the three releases establish a multi-year lengthening trend with real quarter-to-quarter noise inside it, not a smooth line.

Scope and revision

These are not the same measurement. The dedicated 2025 report and the Q4 2023 report both track the interval between two specific named stages, such as seed to Series A. The Q2 2025 figure of 696 days blends every stage transition into one median, which moves both when individual gaps change and when the mix of financings by stage changes. Carta does not reconcile the stage-specific and blended versions, so the two figures should not be subtracted from each other as a before-and-after of the same thing. All three reports measure only priced rounds on Carta's platform, a large but not universal sample, and they measure time between an event pair, not a company's total time to any outcome.

The decision in front of you

For a founder building a fundraising timeline, this data is a planning input, not a promise. As editorial guidance beyond what the reports claim: budget runway assuming the interval to your next round could resemble your sector's stage-specific median rather than the cross-sector blend. A fintech founder reading only the 696-day blended figure would understate what Carta's own sector breakdown shows for fintech specifically.

• Does a comparison use the same stage pair and the same sector across both periods?
• Is the figure a blended, all-stage median or a specific stage-to-stage interval?
• What does the provider's own dataset include or exclude, and does that match the company being planned for?

None of these releases says how long any individual company's next round will take. They say what a large, provider-defined sample has done, measured a particular way, in a particular quarter, and that the measurement itself has moved before.