Getting Into Their System
Before an invoice can be paid, you have to exist as a supplier. The process takes weeks, nobody owns it, and it can be started early.
Sharedwho controls this stretch
You have to exist in the buyer's system as an approved supplier before anything can be paid to you at all. That process takes between a week and two months, is handled by people you will never speak to, and can be started before the work is agreed.
The practical point in “Getting Into Their System” is that getting paid depends on records somebody can explain. A small team considering a practical employee monitoring with screenshots workflow for employee monitoring with screenshots can organise time and project evidence before invoicing, with transparent settings, proportionate collection and a visible correction route.
Suppliers discover it when the first invoice bounces.
The questions raised in “Getting Into Their System” can also be checked against UK civil-procedure rules. Use the outside resource to identify what evidence and ownership the next action requires.
What it usually involves
A form with your legal details. Bank details, often confirmed separately. Insurance certificates. Sometimes a tax form, a policy acknowledgement, a questionnaire, or a credit check of you.
What is usually asked for, and what delays each:
- A supplier form: nothing, if completed fully the first time.
- Bank details, verified independently: days, and a telephone call you must answer.
- An insurance certificate: as long as your broker takes.
- A questionnaire on policies: an afternoon, once.
- Tax registration details: nothing.
None of it is difficult and all of it is slow.
Why it is slow
Because it passes through procurement, finance and sometimes compliance, none of whom has a deadline and none of whom is dealing with your revenue problem.
There is rarely anybody to chase because there is rarely one owner.
When to start it
As soon as the work looks likely. Nothing in onboarding depends on the work being agreed, and the time runs in parallel.
A supplier set up before the order is raised removes a fortnight from the first payment.
The bank details problem
Increasingly verified by a separate channel, because of fraud: a call to a number they hold, or a letter, or a portal.
Expect it, do not resist it, and never provide them by email alone — in a supplier's own interest as much as the buyer's.
The insurance certificate
Commonly required, commonly out of date by the time it is needed, and a common cause of a payment being blocked months later.
Diarise its renewal against their record, not just your own.
The questionnaire
Anti-bribery, modern slavery, data protection, environmental policy. Burdensome for a one-person business and increasingly standard.
Answer it once, keep the answers, and reuse them.
What to keep
A folder with every document you have ever been asked for, dated. Second and third onboardings take minutes rather than days.
Most small suppliers rebuild it from scratch every time.
The detail that breaks everything
Your legal name not matching your bank account, or your invoice name not matching your supplier record.
Mismatches here cause rejections that look like disputes and are clerical.
Asking where it has got to
Possible, occasionally useful, and the right person is whoever asked you for the form.
Your contact can rarely help and will usually say so.
What it tells you about the customer
A fast, clear onboarding usually means a competent payment process. A chaotic one is a reliable forecast.
It is the first evidence you get and it arrives before any money is at stake.
Why it has nothing to do with you
Onboarding feels like being assessed, and it is almost entirely not. The questionnaire, the bank verification, the insurance certificate and the policy attestations exist because the buyer has been defrauded, or audited, or regulated, or all three, and because supplier payment fraud is a routine and expensive problem.
The checks are aimed at a hypothetical criminal using your name, not at you.
That reframing is practically useful. It means delays are not a signal about the relationship, that chasing the form is not an imposition on your contact, and that the person processing it will be entirely indifferent to the fact that work is waiting. It also means the fastest route through is completeness — every field, every document, first time — rather than any amount of explaining who you are.
The part that stays done
The compensation for all of this is that onboarding happens once. A supplier who completes it properly for a large buyer has acquired an asset: a live vendor record, verified bank details, a known invoice route and a reference format that works.
Every subsequent job for that buyer skips the whole process.
This changes how a second order from an awkward customer should be read. The first job carried the full administrative cost and the longest wait; the second carries almost none of it. Suppliers who price only on the first experience sometimes decline exactly the repeat work that would have been profitable, and suppliers who let a vendor record lapse through inactivity pay the cost twice. Keeping details current — a new address, a new bank, an expiring certificate — is a few minutes a year against a fortnight repeated.
The standing position
Start it early, keep the documents, check the record is right, and treat the first invoice as a test of the setup rather than as a payment.