Employers sponsoring workers under the Skilled Worker route need to understand not only how much they pay their employees, but also how that salary is paid over time. Changes to the Immigration Rules introduced on 8 April 2026 make pay period compliance an important part of managing a sponsor licence.
This guide explains the rules in straightforward terms, including how salary is assessed, which payments count, how HMRC records can be checked and what employers can do to reduce the risk of a compliance problem.
1. Why Pay Period Compliance Matters for Skilled Worker Sponsors
Paying a sponsored employee the correct annual salary is an important starting point, but it is not the whole picture. Under paragraph SW 14.3B of Appendix Skilled Worker, employers must also ensure that salary is paid in a way that meets the rules over the relevant pay periods.
These requirements took effect on 8 April 2026 and are particularly important for employers whose sponsored workers receive variable pay, work irregular hours or experience changes in their working arrangements.
The rules introduce specific tests over three months, 12 weeks or 17 weeks, depending on how the worker is paid and their working pattern. Employers must also ensure that the worker receives at least the applicable going rate for every hour worked in each pay period.
This means that a salary figure on a Certificate of Sponsorship (CoS) cannot be considered in isolation. The employer needs to check that the worker's actual pay and working arrangements remain consistent with the information provided to the Home Office.
Skilled Worker pay period compliance should therefore be part of routine payroll management, rather than something considered only when a sponsor licence audit is approaching.
2. Understanding SW 14.3B: The Pay Period Rules
Paragraph SW 14.3B sets out how sponsored workers must be paid and how their salary is assessed over time.
There are three main requirements.
First, pay must meet the going rate for every hour worked in each pay period. Employers need to consider the worker's actual hours and pay, rather than relying solely on their annual contractual salary.
Second, the salary must meet the relevant minimum over the applicable assessment period. The rules use different periods depending on pay frequency:
- Monthly paid workers, or workers paid less frequently: salary over any three-month period must be at least one quarter of the required annual salary.
- Workers paid more frequently than monthly: salary over any 12-week period must be at least 12/52 of the required annual salary.
- Workers with an irregular working pattern: where regular hours differ from week to week, resulting in uneven pay, salary over any 17-week period must be at least 17/52 of the required annual salary. The sponsor must also confirm the working pattern as required by the rules.
These are rolling assessment periods, not simply tests of whether an employee received the correct amount in a particular calendar month or quarter.
For example, if the required annual salary is £52,000, a monthly paid worker must receive at least £13,000 over any three-month period. A worker paid weekly must receive at least £12,000 over any 12-week period.
These figures are illustrations of the calculation, not a substitute for checking the worker's actual salary requirements.
The important point is that employers must understand both the applicable salary threshold and the way the worker's pay is assessed. Pay period averaging under the Skilled Worker visa rules does not remove the separate requirement to meet the going rate for each hour worked.
3. Which Salary Components Count?
When checking the sponsor salary threshold, employers must understand which payments can be included in the salary calculation.
The amount entered on the CoS must reflect the salary recognised under the Immigration Rules. It should not automatically include every payment or benefit an employee receives.
Payments to consider
Basic gross salary
This is generally the starting point for the calculation. Employers should check the contractual salary against the applicable general salary threshold and going rate, taking account of the worker's circumstances and the relevant salary option.
Allowances
Not every allowance counts towards the Skilled Worker salary requirement. The rules restrict which allowances may be included, so employers should not assume that payments such as London weighting or other contractual supplements can automatically be added to basic salary.
Bonuses and variable payments
Employers should be cautious about relying on bonuses, commission or overtime to meet a salary requirement. Whether a payment can be included depends on the applicable rules and the nature of the payment. A discretionary bonus or an occasional payment should not simply be treated as guaranteed salary.
Payments that should not automatically be counted
The following items require particular care:
- Expenses reimbursed by the employer.
- Benefits in kind, such as private medical insurance or a company car.
- Employer pension contributions.
- One-off sign-on payments.
- Discretionary bonuses and overtime payments where these do not qualify as salary under the relevant rules.
- Commission or other variable payments whose treatment has not been properly established.
The safest approach is to calculate the worker's qualifying salary using the relevant Immigration Rules and sponsor guidance, rather than the employee's total remuneration package.
Employers should also check whether deductions or payments made back to the employer affect the salary calculation. Certain deductions, loan repayments and investments can reduce the salary that counts for immigration purposes.
Where the calculation is unclear, it is better to resolve the issue before relying on a particular payment to meet the sponsor salary threshold.
4. HMRC Data Matching and Sponsor Compliance Checks
HMRC payroll records are an important source of information when the Home Office checks whether a sponsor is meeting its responsibilities.
Employers must report payroll information accurately through the PAYE system, including the relevant Real Time Information (RTI) submissions. The Home Office can carry out HMRC checks and may use the information available to investigate whether sponsored workers are being paid as required.
For employers, this means that the information held by HR, payroll and the sponsorship management team needs to be consistent.
For example, a CoS might record a salary of £45,000 a year, while payroll records show that the employee is receiving substantially less. There may be a legitimate explanation, but the employer needs to understand the discrepancy and be able to demonstrate that the worker continues to meet the applicable requirements.
Potential warning signs include:
- Actual pay falling below the relevant salary requirement.
- Payroll records that do not match the salary or working arrangements recorded on the CoS.
- Missing or late payroll submissions.
- Unexplained changes in working hours or salary.
- Extended periods of reduced or unpaid pay.
- Deductions that affect the salary counted under the Immigration Rules.
A discrepancy does not automatically establish a breach, and employers should not assume that every payroll difference will trigger an investigation. However, unexplained inconsistencies can create avoidable problems during a compliance check.
It is therefore important to keep payroll records accurate, submit RTI information on time and investigate discrepancies promptly. Employers should not rely on the assumption that an issue will go unnoticed simply because the annual salary in the employment contract appears correct.
5. What Happens if a Sponsored Worker Is Underpaid?
Failing to meet the Skilled Worker salary requirements can have serious consequences for both the employer and the sponsored worker.
The Home Office may take action against a sponsor that fails to comply with its duties. Depending on the circumstances and seriousness of the breach, this can include:
- Downgrading the sponsor licence rating, where applicable.
- Suspending the sponsor licence while concerns are investigated.
- Revoking the sponsor licence.
- Restricting the employer's ability to sponsor additional workers.
If a licence is revoked, the employer may lose the ability to sponsor workers under the relevant route. This can have significant operational consequences, particularly where the business relies on international recruitment.
The sponsored employee may also be affected. If sponsorship ends or the worker no longer meets the relevant requirements, the Home Office may take action affecting their immigration permission. Curtailment is not automatic in every case, and the outcome will depend on the circumstances and the applicable rules.
An underpayment should not be ignored simply because the employer subsequently pays the employee the difference. Correcting payroll records or making an additional payment may help address an underlying payroll problem, but it does not necessarily remove a breach of the Immigration Rules.
Employers should investigate the cause, calculate the shortfall, correct any ongoing problem and obtain appropriate advice on the immigration implications.
The key lesson is that prevention is more effective than trying to resolve a sponsorship problem after the Home Office has identified it.
6. Best Practices for Skilled Worker Pay Period Compliance
Employers can reduce the risk of salary compliance problems by building immigration requirements into their normal payroll and HR processes.
Align payroll with sponsorship records
Make sure payroll has access to the relevant salary information for each sponsored worker. This should include the salary recorded on the CoS, the applicable salary option, the required going rate and the worker's expected working hours.
Payroll staff should know when a worker is sponsored and understand that changes to their pay may have immigration consequences.
Check salary against the correct assessment period
Do not rely exclusively on an annual salary figure or a single monthly payroll report.
Introduce checks that identify whether the worker meets the applicable three-month, 12-week or 17-week salary test. The process should also consider the going rate for every hour worked in each pay period.
Where hours or pay vary, employers should investigate the reasons and establish whether the working arrangement is permitted under the relevant rules.
Communicate changes promptly
HR, payroll and the person responsible for the sponsor licence should communicate about:
- Salary increases or reductions.
- Changes to contractual hours.
- Unpaid leave or extended absences.
- Changes to working patterns.
- Deductions from salary.
- Changes to employment terms.
Some changes must be reported through the Sponsorship Management System (SMS), generally within 10 working days where the relevant reporting duty applies. Employers should check the specific reporting requirement rather than assume that every change follows the same deadline.
Maintain clear records
Keep employment contracts, CoS details, payslips, payroll reports, working-hours records and relevant correspondence together in an organised format.
Where pay differs from expectations, retain a clear explanation and supporting evidence. This will help demonstrate that the employer understands the issue and has taken appropriate action.
Audit regularly
A monthly salary review is a useful starting point, supported by quarterly internal compliance checks. These reviews should compare the worker's actual pay with the applicable immigration requirements and identify discrepancies before they become more serious.
Payroll staff should also receive training on the immigration rules relevant to sponsored employees.
A well-managed process does not need to be complicated. It does need to be consistent, documented and capable of identifying problems early.
7. Frequently Asked Questions
What happens if a sponsored worker is underpaid in one pay period?
The effect depends on the circumstances, including the worker's pay frequency, working hours and applicable assessment period. A shortfall may indicate a compliance problem, particularly if the worker fails the relevant salary test or is paid below the required going rate for hours worked.
Employers should investigate immediately. A later payment does not automatically remove any breach.
Can bonuses count towards the Skilled Worker salary threshold?
Employers should not assume that bonuses count. The treatment depends on the applicable Immigration Rules and the nature of the payment. Discretionary or one-off bonuses should not automatically be relied on to meet the required salary.
How does the Home Office check payroll compliance?
The Home Office can check payroll information through HMRC and may compare available records with the information provided by the sponsor. It can also request documents or carry out compliance visits where appropriate.
What is the averaging period for monthly paid workers?
For workers paid monthly or less frequently, salary over any three-month period must be at least one quarter of the required annual salary. Workers paid more frequently are subject to the 12-week test, while certain irregular working patterns are subject to a 17-week test.
Can I correct an underpayment retrospectively?
You should correct payroll errors as soon as possible, but a later payment does not necessarily cure an immigration compliance breach. Employers should assess the original shortfall, its cause and any reporting or sponsorship implications before deciding what action is required.
Does maternity or sick pay affect salary compliance?
It can. Certain absences and periods of reduced pay may be treated differently under the Immigration Rules and sponsor guidance. Employers should check the rules that apply to the particular absence and circumstances rather than assume that any reduction in pay automatically constitutes a breach.
Conclusion: Stay Ahead of Pay Period Compliance
Skilled Worker pay period compliance is an important part of managing a UK sponsor licence in 2026. Employers need to look beyond the annual salary recorded on a CoS and understand how actual pay, working hours and payroll records fit together.
The changes introduced through paragraph SW 14.3B make it particularly important to check the correct assessment period, ensure that the going rate is met for hours worked and investigate discrepancies promptly.
Reviewing payroll processes now can help identify problems before they develop into more serious sponsorship issues. By bringing HR, payroll and immigration compliance together, employers can protect their ability to recruit internationally and give sponsored workers greater certainty about their employment arrangements.
Need help ensuring your sponsored workers' pay meets the requirements?
Our compliance team can review your payroll processes, identify potential risks and help you maintain your sponsor licence.
This article provides general information for employers and is not a substitute for advice on an individual worker's circumstances. Salary requirements and reporting duties depend on the applicable Immigration Rules and the worker's specific circumstances.
