The stack I would set up for a young company.

Every founder asks the same question in the first month after a raise, which tool do I use for this. So here is what I would reach for, by category, with the reason for each. It is opinionated on purpose, and it is short on purpose. Pick for your stage, not for the logo, and remember that a boring stack you keep up to date beats a clever one that nobody reconciles.

The tool names below are plain text on purpose, no vendor links and nothing paid to be here. The only links on this page go to YouTube, where a few people explain these things better than a paragraph can.

Where the money sits

In the United States, Mercury or Brex open fast and connect cleanly to your books. In Europe, Qonto or Revolut Business give you multi currency and quick onboarding, and you add a traditional bank later, once a grant or a larger balance asks for one. The whole point is an account that talks to your accounting software and holds more than one currency if your team is spread across borders.

The system of record

Xero or QuickBooks, and honestly either is fine, so pick the one your future bookkeeper already knows. The bigger decision is to bring in a real bookkeeper early, even a few hours a month, because clean books from day one are cheap and a cleanup the week before diligence is not. Your accounting tool is the source of truth that every other number leans on, so treat it that way from the first invoice.

Paying your people, across borders

Deel or Rippling let you hire employees and contractors in more than one country without opening a legal entity everywhere first. If your whole team sits in one country, a local payroll provider is cheaper and simpler, and you do not need the global machinery yet. The common mistake is stringing five tools together for a five person team, so keep it to one and let it grow with you.

Who owns what, kept true

Ledgy in Europe, Carta or Pulley in the United States. Put every SAFE, every option grant and every founder split into it from the first round, not the third, because a cap table rebuilt from memory the night before a raise is exactly where the nasty surprises live. Set your option pool and your valuation, a 409A in the United States or the local equivalent, before you start handing out equity, so the grants you make actually hold up.

Idle cash and foreign exchange, working for you

This one is planning more than a product. Cash you will not touch for six to twelve months can sit in a money market fund or short government bills, through your bank or a treasury product, which quietly stretches your runway while you sleep. If your team spans currencies, decide where you hold each one and stop paying a spread on every transfer. On chain, a Safe multi signature wallet is the sane default the moment a treasury has more than one signer, with a heavier custody setup only once the balance truly justifies it. The rule I hold to with any client is simple, I design the plan and you hold the keys, the funds never move through me.

Cards and receipts without the shoebox

Brex or Ramp in the United States, Pleo or Payhawk in Europe, for company cards that capture the receipt and post it to your books on their own. It earns its place the moment more than two people are spending money, because chasing receipts by hand is a quiet tax on everyone, and the month end close drags every time one goes missing.

Getting paid, cleanly

If you sell software, Stripe handles billing and a light invoicing tool covers the rest. Keep it simple until your revenue is real and repeatable, then bring in proper revenue recognition once there is something to recognise. Early on, an invoice that actually goes out on time beats a perfect billing system that is not live yet, so ship the simple version first.

The three things a round actually needs

Your financial model lives in a spreadsheet you can defend line by line, not a black box that spits out a number you cannot explain. Your data room can start life as a well organised shared drive and only later earns a dedicated tool. Your raise readiness is a checklist, not a platform. Fancy software here impresses no investor, clear numbers do, so put the effort into the numbers and keep the tooling plain.

Keep every account in your own name, so access is always yours to grant and yours to revoke, and so your numbers never live only inside someone else's login. And hold on to the plainest truth in all of this, the tool is not the strategy. A boring stack that you actually keep current will carry you further than a clever one nobody reconciles. Set it up once, cleanly, and let good habits compound.