Y CombinatorInvestor Index accounting technology investments
Ranked #1 of 16January 2025 – September 2026
Y Combinator backed 26 accounting technology rounds between January 2025 and September 2026, more than any other investor, and led none of them. The rounds it backed raised US$1.33bn in total. Its most frequent areas were payables and receivables, payroll, and tax and compliance, with 5 rounds each.
26Rounds
0Led
US$1.33bnRaisedin its rounds
#1Rank
Rounds each quarter
Rounds led or joined
Q1 20254
Q2 20254
Q3 20255
Q4 20253
Q1 20263
Q2 20263
Q3 20264
Where it invests
Rounds by product area
Payables and receivables5
Payroll5
Tax and compliance5
FP&A and forecasting3
Spend management3
ERP and general ledger2
Audit1
Bookkeeping1
Practice management1
Every round
Largest first, as announced
| Company | Amount | Round | Role | When |
|---|---|---|---|---|
| Rippling | US$450m | Series G | Joined | May 2025 |
| Jeeves | US$110m | Funding round | Joined | Sep 2026 |
| Slash | US$100m | Series C | Joined | Apr 2026 |
| Numeral | US$100m | Series C | Joined | Sep 2026 |
| Campfire | US$65m | Series B | Joined | Oct 2025 |
| Abacum | US$60m | Series B | Joined | Jun 2025 |
| Warp | US$60m | Series B | Joined | Jun 2026 |
| Confido | US$55m | Series B | Joined | Sep 2026 |
| Toku | US$48m | Series A | Joined | Apr 2025 |
| Alaan | US$48m | Series A | Joined | Aug 2025 |
| Campfire | US$35m | Series A | Joined | Jun 2025 |
| Numeral | US$35m | Series B | Joined | Sep 2025 |
| Aleph | US$29m | Series B | Joined | Sep 2025 |
| Sphere | US$21m | Series A | Joined | Nov 2025 |
| Confido | US$20m | Seed and Series A | Joined | Aug 2025 |
| Numeral | US$18m | Series A | Joined | Mar 2025 |
| Fazeshift | US$17m | Series A | Joined | May 2026 |
| Concourse | US$12m | Series A | Joined | Jan 2026 |
| Trayd | US$10m | Series A | Joined | Mar 2026 |
| Central | US$8.6m | Seed round | Joined | Aug 2025 |
| Double | US$6.5m | Series A | Joined | Dec 2025 |
| TaxGPT | US$4.6m | Funding round | Joined | Feb 2025 |
| Trayd | US$4.5m | Seed round | Joined | Feb 2025 |
| Denki | US$4.1m | Funding round | Joined | Mar 2026 |
| Finto | US$3.4m | Seed round | Joined | Jul 2026 |
| Bluebook | US$3m | Pre-seed round | Joined | Feb 2025 |
How it’s compiled
- Every funding round announced
- Rounds led or joined by the firm
- Rounds as announced, totals in US$
Get the funding report and the Investor Index on the 1st of each month, with the accounting technology briefing for finance professionals.
