NIBTT says an employer must register within 14 days of hiring the first employee or qualifying unpaid apprentice. NI 1 is the employer registration form. Employer obligations continue after registration through employee registration, accurate pay records, contribution deductions, remittances and notification of changes.
What triggers employer registration
NIBTT's employer obligations state that employers, employees and unpaid apprentices covered by the National Insurance rules must register. Its qualification guidance says a person or entity that employs at least one other person at the qualifying earnings level, or employs unpaid apprentices, must register as an employer within 14 days.
Because contribution classes and thresholds can change over time, use NIBTT's current guidance when deciding whether a particular worker is insurable.
NI 1 is the employer registration form
NIBTT's forms page identifies NI 1 — Application to Register as an Employer and states that it is to be completed within 14 days of hiring the first employee.
The form captures the employer's business particulars. BizReg's NIS intake collects the information needed to prepare the employer registration support file, including business details, owners/directors, employee counts, record-keeping locations and authorised signatory information.
Employees need their own National Insurance numbers
An employer also has duties when a new employee has not supplied a National Insurance Number. NIBTT says employees should provide their number within seven days of employment, and the employer has a registration obligation where the worker is not yet registered.
NIBTT identifies NI 4 as the Application to Register as an Employed Person for employees working for the first time.
The contribution obligation starts with employment
NIBTT states that National Insurance contributions are compulsory for eligible employees and unpaid apprentices and are due from the start of employment, apprenticeship or probation where the rules apply.
The employer deducts the employee's share at the time earnings are paid and remains responsible for remitting the total contribution to NIBTT.
Contribution records matter as much as the payment
The employer must maintain accurate pay records and submit the contribution information required by NIBTT. Its forms list includes NI 184 for particulars of contributions due and NI 187 for a summary of contributions due/in arrears.
A payment without accurate employee contribution data can still create compliance problems. Payroll should therefore connect the employee record, earnings class, deduction, employer share and remittance evidence.
When contributions are due
NIBTT guidance states that contributions for a month are payable on or before the last day of the month, with a grace period to the 15th day of the following month. Its penalties page also identifies penalties associated with late or inaccurate contribution data.
Because rates, earnings classes and operational payment channels can change, verify the current NIBTT contribution schedule before running payroll.
Tell NIBTT when key employer particulars change
NIBTT says employers should notify it if the business address, business name/nature, owners or directors change, and should notify NIBTT of the intended closure date and return the employer registration certificate where required.
This means a Companies Registry change can create a second task: updating NIBTT records. A corporate filing alone does not automatically update the National Insurance record.
NIS and PAYE should be set up together when hiring
NIS and PAYE are separate systems. NIS is administered by NIBTT; PAYE is administered by IRD. An employer can therefore have obligations to both agencies for the same payroll.
Use the BIR & PAYE guide to see how the tax registration differs from NIS employer registration.
What BizReg’s NIS support covers commercially
BizReg's NIS Employer Registration Support is priced at TTD $400. It is administrative support for preparing the employer registration information and related intake. It does not replace the employer's ongoing responsibility to maintain accurate payroll and contribution records.
For recurring payroll, accounting or legal compliance advice, engage the appropriate qualified professional where required.
Questions people ask
How quickly must a new employer register with NIBTT?
NIBTT states that the employer must register within 14 days of hiring the first qualifying employee or unpaid apprentice.
What is Form NI 1?
NI 1 is NIBTT's Application to Register as an Employer.
Is NIS the same as PAYE?
No. NIS is administered by NIBTT and covers National Insurance registration/contributions. PAYE is administered by IRD and covers employee income-tax withholding.
Does NIS registration end the employer’s obligations?
No. Employers have continuing contribution, recordkeeping, employee-registration and change-notification duties.
References
Requirements can change. Check these references for current details.