First 90 Days in a New Finance Role: NQ to Manager

The first ninety days in a new finance role at newly qualified to manager level are different from arriving as a Finance Director, and most advice on the subject is written for the latter. You are not setting direction or building a mandate; you are proving you can be relied on. Nobody hands you authority, and the credibility you will need later is earned in the first three months by doing unglamorous things well. This guide covers what to do in weeks one to twelve, what to notice, and the mistakes that cost people credibility they then spend a year rebuilding. (If you are arriving at director level, our guide to the Finance Director’s first 100 days covers that quite different job.)

Weeks 1–2: understand the plumbing

Resist the temptation to have opinions. In the first fortnight your job is to understand how money actually moves through this business and where the numbers come from.

Follow a transaction end to end. One sale from order to cash, one purchase from requisition to payment. It teaches you more about the business, the systems and the controls than a week of reading procedures — and it surfaces the workarounds nobody mentions.

Get the last three months’ management accounts and the last statutory accounts (the filed version is public at Companies House), and read them properly. Then ask someone to explain the three things you did not understand. Asking well-formed questions in week two builds more credibility than pretending in week ten.

Meet your immediate colleagues individually, including the transactional team. In most finance functions the person who processes the purchase ledger knows where the problems are, and they will tell someone who asks.

And learn the close timetable — not the published version, the real one. Which days are pressured, what always arrives late, who chases whom.

Weeks 3–6: deliver your first cycle

The first month-end is the moment your reputation is set, and the standard to aim for is unremarkable: on time, accurate, no surprises.

Prepare more than you think you need to. First closes take longer because nothing is where you expect it. Start earlier, and ask before you guess.

Flag problems early rather than solving them silently. A number that will not reconcile, raised on day three, is a shared problem. Raised on day eight, it is your problem. Nobody minds a new joiner asking; everyone minds a surprise.

Do not change anything yet. You will see things done inefficiently — a spreadsheet that should be a report, a reconciliation done twice. Note them. Suggesting improvements in month one, before you understand why it is done that way, is the fastest way to be marked as someone who does not listen. Some of those workarounds exist for reasons that will only become apparent at year-end.

And write down what you learn. The accrual bases, the odd account, the supplier who always disputes. You will be the person who knows this in a year; capture it while it is still surprising.

Weeks 7–12: earn the right to improve

Once you have delivered two clean cycles, you have credibility to spend. Spend it carefully.

Pick one improvement, not five. Something visible, bounded and useful — a reconciliation that can be automated, a report that takes four hours and could take one, a control gap that matters. Deliver it completely.

Frame it as a question rather than a criticism. “I noticed the bank rec takes half a day — would it help if I looked at whether the feed could be improved?” lands very differently from “this is inefficient”. The second is frequently true and rarely effective.

Understand who your work serves. If you produce a pack, find out who reads it and what they do with it. Analysts who know the answer to that produce different work from those who do not — and it is the habit that separates the people who progress from the people who do not.

And ask for feedback explicitly at the ninety-day mark, rather than waiting for a probation review. “What would you like me to do differently?” asked directly usually produces something more useful than any formal process.

What to notice while you settle

Four things worth forming a view on quietly during the first quarter, because they shape what your next two years look like.

Is the balance sheet actually reconciled? The single best indicator of the state of a finance function, and the thing most likely to become your problem at year-end.

Does the business act on the numbers? If the pack is produced and nothing changes, you are in a production role regardless of the job title.

Who is respected, and why? Finance functions have informal authority structures that rarely match the org chart.

And is anyone developing you? At this level, a manager who reviews your work and explains their thinking is worth more than a salary difference — and CPD obligations through ICAEW, ACCA or CIMA continue regardless. If nobody is, that is information — and worth raising before it becomes a reason to leave.

The mistakes that cost credibility

Comparing everything to your last employer. “At my old firm we did it this way” is the most common and most damaging habit of new joiners. Even when you are right, it lands as criticism from someone who does not yet understand the business.

Guessing rather than asking. A wrong number delivered confidently costs far more than a question asked in week three.

Going quiet when struggling. The instinct is to work harder alone. The people who settle well ask earlier than feels comfortable.

Over-promising in month one. Taking on extra work to make an impression, then delivering the core role late.

And treating the transactional team as beneath you. Newly qualified accountants sometimes do this without noticing. It is both unpleasant and self-defeating — those colleagues determine whether your close runs smoothly.

If it is your first management role

One additional dimension. If the move also brings direct reports for the first time, the ninety-day priority is different: understand what each person actually does before changing anything about how they do it. Sit with them. Learn their bottlenecks. The instinct of a newly promoted manager is to demonstrate value through change, and the effect is usually to disrupt work that was functioning while missing what genuinely needed attention. Our guides to Management Accountant versus Finance Manager and the FM to FC step cover what the ownership dimension actually requires.