Mercury is the fintech ambitious companies use for banking* and all their financial workflows. With a powerful account at the center of their operations, companies can make better financial decisions and ensure that every dollar spent aligns with company priorities. That's why over 300K startups choose Mercury to confidently run all their financial operations with the precision, control, and focus they need to operate at their best. To learn more, visit Mercury.com.
*Mercury is a fintech company, not an FDIC-insured bank. Banking services provided through Choice Financial Group and Column N.A., Members FDIC.
Mercury is startup banking* as it should be: uncompromising stability, smoother payments, elevated security, and fine‑tuned user controls.
A meticulously engineered suite of tools, Mercury offers free checking and savings accounts, up to $5M in FDIC** insurance, debit and credit cards, domestic and international wire transfers, treasury management, venture debt, and more. Grow your capital, extend your runway, and even enjoy yourself a little bit in the process.
Trusted by more than 100,000 startups. Give the product a try for yourself: demo.mercury.com
*Mercury is a financial technology company, not a bank. Banking services provided by Choice Financial Group and Evolve Bank & Trust®; Members FDIC.
** Expanded FDIC insurance is made possible through our partner banks and use of sweep networks. To learn more, visit mercury.com/how-mercury-works.
Great sitting down with Mercury to share more about how we use their API to build custom finance reports and make sure payments across Go Fractional are seamless.
Paying people on time should always be a given. But especially when your whole model runs on fractional leaders trusting the platform, it's everything. Mercury makes that easy.
Jonathan Grana, founder and CEO of Go Fractional, connects companies with fractional talent. With Mercury’s API, automated rules, and same-day problem resolution, he’s always confident these contractors will get paid on time.
We’re taking Mercury Books off the books (literally).
Join us in San Francisco for an intimate dinner hosted by Mercury Ambassador Arianna Simpson to celebrate the launch of Mercury Books. Expect good food, great company, and candid conversation about building businesses and the stories behind the numbers.
📅 Monday, October 5th in
📍 San Francisco, CA
Space is limited. RSVP link in comments.
Founders run the same loop every month: track the spend, chase the invoices, turn it all into the board report.
Mercury's MCP connector in Notion just got templates for each step, filled from your live account data, right where the work already happens.
Six months of Notion Business free for Mercury customers, unlimited AI included: ntn.so/mercury
Jonathan Grana, founder and CEO of Go Fractional, connects companies with fractional talent. With Mercury’s API, automated rules, and same-day problem resolution, he’s always confident these contractors will get paid on time.
AI can make accounting faster. It can also create a new job: checking its work.
That was one of the central design problems the team faced when building Mercury Books. When software starts doing more of the work, what does someone need to see before they can trust the result?
“Someone who created a rule has already made an intentional decision to automate future matches,” said Verli C., Staff Product Designer on Mercury Books. “Asking them to reapprove every result would undermine the purpose of the rule.”
That thinking carries through to how Books handles automation. Automated decisions are traceable, different sources of categorization are clearly distinguished, and corrections stay close to the transaction itself.
Andy Hsu, Senior Product Designer on Mercury Books, described the standard behind that approach: “Every number drills to the transactions behind it, every transaction to its journal entry and source document. People who hate accounting still need to trust it, and I think trust means you can always check and verify.”
The goal is to show the right reasoning at the right moment, then get out of the way when human judgment is not adding value.
“Our broader belief is that automation should give people less to think about, not more” Verli said. “Mercury should help people focus on the transactions that actually need their attention, instead of just making it faster to review every single one.”
Accounting software hasn't changed much in decades. We believed just because it was familiar doesn't mean it was broken, but it shouldn't be an excuse either. Proud of how the team balanced these principles with Mercury Books.
Accounting software has looked and worked a certain way for decades. The design team behind Mercury Books kept coming back to this tension: just because something is familiar, it doesn't mean it's entirely broken.
Ledgers, journal entries, reconciliation, information-dense tables, predictable sorting, and bulk actions have endured for a reason. They represent decades of learned confidence. For accounting professionals, familiarity can be a form of usability.
But familiarity should not become an excuse to preserve every inherited assumption.
“We wanted to rethink the idea that rigor has to feel intimidating, that accounting software should be emotionally cold, or that every user should land in a table of unfinished work,” said Verli C., Staff Product Designer on Mercury Books.
That meant borrowing the velocity of spreadsheets without inheriting their ambiguity.
Books supports the behaviors accountants already rely on: keyboard navigation, inline editing, predictable selection, and bulk actions that appear when they are relevant. But unlike a spreadsheet, Books understands what is inside each row. It knows when something is a transaction, what a category means, which entities are related, and which actions make sense in context.
The same thinking shaped where the product begins.
“Every other accounting product feels like you have to do so much to just get started,” said Anthony Marquez, Product Manager on Books. “Building into Mercury Banking allowed us to create a feeling that, without knowing it, founders had been doing bookkeeping with Mercury Books the entire time.”
Rather than opening with a queue of work waiting to be completed, Books starts with cash, expenses, and revenue. Founders can begin with a picture of how the business is doing, then move into the underlying details when something deserves their attention.
The goal was not to hide the real complexity of accounting or make it feel artificially simple. It was to make that complexity legible: to give it structure, reveal it at the right moment, and let people move between levels of detail without losing context.
As Verli put it, “Accounting shouldn’t feel like being punished for running a company. At its best, it should feel like getting closer to it.”
Accounting software has looked and worked a certain way for decades. The design team behind Mercury Books kept coming back to this tension: just because something is familiar, it doesn't mean it's entirely broken.
Ledgers, journal entries, reconciliation, information-dense tables, predictable sorting, and bulk actions have endured for a reason. They represent decades of learned confidence. For accounting professionals, familiarity can be a form of usability.
But familiarity should not become an excuse to preserve every inherited assumption.
“We wanted to rethink the idea that rigor has to feel intimidating, that accounting software should be emotionally cold, or that every user should land in a table of unfinished work,” said Verli C., Staff Product Designer on Mercury Books.
That meant borrowing the velocity of spreadsheets without inheriting their ambiguity.
Books supports the behaviors accountants already rely on: keyboard navigation, inline editing, predictable selection, and bulk actions that appear when they are relevant. But unlike a spreadsheet, Books understands what is inside each row. It knows when something is a transaction, what a category means, which entities are related, and which actions make sense in context.
The same thinking shaped where the product begins.
“Every other accounting product feels like you have to do so much to just get started,” said Anthony Marquez, Product Manager on Books. “Building into Mercury Banking allowed us to create a feeling that, without knowing it, founders had been doing bookkeeping with Mercury Books the entire time.”
Rather than opening with a queue of work waiting to be completed, Books starts with cash, expenses, and revenue. Founders can begin with a picture of how the business is doing, then move into the underlying details when something deserves their attention.
The goal was not to hide the real complexity of accounting or make it feel artificially simple. It was to make that complexity legible: to give it structure, reveal it at the right moment, and let people move between levels of detail without losing context.
As Verli put it, “Accounting shouldn’t feel like being punished for running a company. At its best, it should feel like getting closer to it.”
Friday fun fact: Luca Pacioli (c. 1447–1517) was an Italian Franciscan friar and mathematician, best known as the "father of accounting."
In 1494 he published Summa de arithmetica, geometria, proportioni et proportionalità, a sprawling maths textbook that included the first printed description of double-entry bookkeeping.
This was a Venetian method merchants had been using for about a century, which he was the first to codify and spread. Debits on the left, credits on the right, and the books must balance: that framework is essentially still what every ledger runs on today.
Since then accounting has evolved and developed into one of the most critical elements of any business. And just in cased you missed it, Mercury now offers AI-powered accounting built into your account. It's our addition to the history of accounting.
It may not have quite the same romantic charm as a Tuscan friar codifying transactions using a quill and parchment, but it's just as beautiful...
#accounting#bookkeeping
Accounting software has looked and worked a certain way for decades. The design team behind Mercury Books kept coming back to this tension: just because something is familiar, it doesn't mean it's entirely broken.
Ledgers, journal entries, reconciliation, information-dense tables, predictable sorting, and bulk actions have endured for a reason. They represent decades of learned confidence. For accounting professionals, familiarity can be a form of usability.
But familiarity should not become an excuse to preserve every inherited assumption.
“We wanted to rethink the idea that rigor has to feel intimidating, that accounting software should be emotionally cold, or that every user should land in a table of unfinished work,” said Verli C., Staff Product Designer on Mercury Books.
That meant borrowing the velocity of spreadsheets without inheriting their ambiguity.
Books supports the behaviors accountants already rely on: keyboard navigation, inline editing, predictable selection, and bulk actions that appear when they are relevant. But unlike a spreadsheet, Books understands what is inside each row. It knows when something is a transaction, what a category means, which entities are related, and which actions make sense in context.
The same thinking shaped where the product begins.
“Every other accounting product feels like you have to do so much to just get started,” said Anthony Marquez, Product Manager on Books. “Building into Mercury Banking allowed us to create a feeling that, without knowing it, founders had been doing bookkeeping with Mercury Books the entire time.”
Rather than opening with a queue of work waiting to be completed, Books starts with cash, expenses, and revenue. Founders can begin with a picture of how the business is doing, then move into the underlying details when something deserves their attention.
The goal was not to hide the real complexity of accounting or make it feel artificially simple. It was to make that complexity legible: to give it structure, reveal it at the right moment, and let people move between levels of detail without losing context.
As Verli put it, “Accounting shouldn’t feel like being punished for running a company. At its best, it should feel like getting closer to it.”
Channing Allen is the co-founder of Indie Hackers, one of the largest entrepreneurship communities in the world. He uses Mercury to manage his finances so that most things just run automatically. No line by line expense reviews and no mental overhead. Just more time to focus on growth.