# Sandbox Banking funding: rounds and investors

> Sandbox Banking has raised $4.3M across 1 round since 2022. Investors include Y Combinator, Forum Ventures and SixThirty. Every round with its source.

Source: https://millionrounds.com/company/sandbox-banking (Millionrounds; every figure on the page links to its filing or article)

United States · [Seed startup](https://millionrounds.com/companies)

# Who invested in *Sandbox Banking*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Financial Services

Y Combinator: W17

Funding summary Updated 26 Oct 2026

**$4.3M** raised across 1 round since 2022, from 1 source

- **Latest round:** Seed, $4.3M Nov 2022
- **Investors:** 4

See who backed them

## The rounds

- **Nov 2022** Seed **$4.3M** [Y Combinator](https://millionrounds.com/fund/y-combinator) [Forum Ventures](https://millionrounds.com/fund/forum-ventures) [SixThirty](https://millionrounds.com/fund/sixthirty) [Tuesday Capital](https://millionrounds.com/fund/tuesday-capital) Also list them on their own site [Horizon](https://millionrounds.com/fund/horizon) Source recorded

## Everyone who backed them

[Y Combinator](https://millionrounds.com/fund/y-combinator) Accelerator **1** round

[Forum Ventures](https://millionrounds.com/fund/forum-ventures) VC firm **1** round

[SixThirty](https://millionrounds.com/fund/sixthirty) Accelerator **1** round

[Tuesday Capital](https://millionrounds.com/fund/tuesday-capital) Asset manager **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=sandbox-banking).

## Also claim to have backed them

This firm lists Sandbox Banking as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Horizon](https://millionrounds.com/fund/horizon) VC firm Seed, per its site

## Quick answers about Sandbox Banking

### Who invested in Sandbox Banking?

Sandbox Banking's investors include Y Combinator, Forum Ventures, SixThirty and Tuesday Capital.

### How much has Sandbox Banking raised?

Sandbox Banking has raised $4.3M across 1 round since 2022.

### When did Sandbox Banking last raise?

Sandbox Banking's most recent round was a Seed of $4.3M in Nov 2022.

### What was Sandbox Banking's biggest round?

Its most recent round, $4.3M in Nov 2022, is also its largest on record.

### Who backed Sandbox Banking first?

Sandbox Banking's first round on record, in Nov 2022, was backed by Y Combinator, Forum Ventures and SixThirty and 1 others.

### What stage is Sandbox Banking at?

Sandbox Banking's latest named round is a Seed, in Nov 2022.

### Where is Sandbox Banking based?

Sandbox Banking is based in the United States.

## Companies like Sandbox Banking

In the same sector, and raised in the last eighteen months.

[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Kalshi** $2.7B · Oct 2026](https://millionrounds.com/company/kalshi)[**STRIVE** $1.3B · Oct 2026](https://millionrounds.com/company/strive)[**CapitalOS** $52M · Oct 2026](https://millionrounds.com/company/capitalos)[**Platform Accounting Group** $355M · Oct 2026](https://millionrounds.com/company/platform-accounting-group)[**Ramp** $4.5B · Oct 2026](https://millionrounds.com/company/ramp)

## Find investors like these

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