For interim CFOs

Walk in. Advise from day one

Get a client's books and bank into one platform, see the business in real time with Mast AI, and turn it into board-ready advice

The reality of the role
By the time I understand a new client's numbers, the first month is already gone.

Every client is a black box

You inherit messy books and a pile of tools, and burn weeks understanding the numbers before you can add value.

Your insight lives in Excel

You rebuild the same models for every client, by hand. Brittle, slow, and impossible to leverage.

Tool sprawl at every client

Bookkeeping here, spreadsheets there, a BI tool somewhere. Juggling logins and exports eats your billable hours.

What changes

Built for advisors who move fast

01

See where a client stands, instantly

Get their books and bank in, and Mast AI reads the business for you. It flags a revenue dip, receivables that are slipping, or a client who now makes up half the revenue. You walk into the first meeting already knowing where to look.

02

Turn the numbers into advice

Budgets, forecasts and a live cash-flow runway show where the client is heading, and Mast AI drafts the board pack. You give the founder forward-looking advice, backed by live numbers.

03

One platform per client, run your way

Replace the stack with one system and run a real month-end close: a checklist with owners and due dates, approvals, and a clean audit trail. Every engagement works the same way, so each one hands off cleanly.

04

Leave the client a real finance function

With Mast, the client moves onto one platform that gives them real-time analytics, smart reconciliation suggestions, automated audit checks, and Mast AI on demand. Their team gets a real finance function, and they keep it long after your engagement ends.

Add Mast to your practice

Advise more clients, with less friction

We are inviting a small group of interim CFOs and advisors to shape Mast before launch. Apply for the private beta and bring your next client onto one system.