SALACO

England Rent Increase Date and Form 4A Checker

Estimate the earliest start date for a Form 4A rent increase in England, check the First-tier Tribunal deadline from box 4.6, and see what details to verify.

Last verified: 2026-11-02

Who are you?

This changes the order of the results and how the checklist is worded.

Examples of tenancies not covered by this tool

  • Tenancies where a company or other corporate body is named as a tenant
  • Social housing or local authority landlords
  • Assured agricultural occupancies (AOA)
  • Certain agricultural land or agricultural holding / farm business tenancies (Schedule 1 paragraphs 6–7)
  • Regulated tenancies
  • Lodgers and certain resident-landlord tenancies that meet the conditions in Schedule 1 paragraph 10
  • Certain student lettings under Schedule 1 paragraph 8, including some halls and other specified student-accommodation or management-code arrangements
  • Certain fixed terms of more than 7 and up to 21 years that meet the transitional date conditions in Schedule 1 paragraph 3E, or fixed terms over 21 years under paragraph 3D
  • For tenancies entered into on or after 1 April 1990 (other than under a statutory pre-1990 contract exception): tenancies where the rent exceeds £100,000 a year, or where the rent is £250 a year or less (£1,000 a year or less in Greater London) — the statutory definition of rent applies
  • Tenancies entered into before 1 April 1990, or pursuant to a contract made before that date: the cash thresholds above cannot be applied automatically, as exclusion depends on the rateable value on 31 March 1990, including the high rateable value test under paragraph 2A and the rent below two-thirds of rateable value test under paragraph 3B (the statutory definition of rent applies)
  • Business tenancies to which Part II of the Landlord and Tenant Act 1954 applies, tenancies where the dwelling-house itself consists of or comprises premises licensed for the supply of alcohol for consumption on the premises, or holiday lets

Ordinary private houses or flats let to students are not automatically excluded. Whether a student letting falls under Schedule 1 paragraph 8 can depend on the identity of the landlord and the management arrangements in place when the tenancy was granted.

Do you confirm that this is an assured periodic tenancy in England to which Form 4A applies?

The list above shows common examples rather than a complete legal test, and other statutory exclusions may also apply. If your arrangement is unusual, or you cannot be certain that Form 4A applies, select 'Not sure' and stop.

Was a valid Section 8 or Section 21 notice served before 1 May 2026 that remains in force, or are possession proceedings still ongoing?

If an existing valid notice or possession claim from before 1 May 2026 is still active, transitional rules apply and dates must be checked manually rather than calculated here.

Which rent increase notice is being used?

Whether Form 4A or an older Form 4 applies depends on the date the notice was actually served, not the date printed on the form. An older Form 4 is not automatically invalid because the law changed, and preserved tenancies may still use an older Form 4 on or after 1 May 2026.

Was there a rent increase under an older rent review clause before 1 May 2026, or is one proposed?

Select Yes if a rent review clause increase took effect before 1 May 2026, was agreed to take effect on or after 1 May 2026, or if you are unsure. Increases that took effect before 1 May 2026 remain in force and any subsequent increase must wait at least 52 weeks; increases under older clauses due to take effect on or after 1 May 2026 do not apply. All such cases require manual checking.

Enter the date the notice was served using a method permitted by the tenancy agreement, or, where the agreement makes no provision, one of the methods set out on Form 4A. Do not enter the proposed date for the new rent in box 4.6, and do not assume the date of posting is the date of service. If you cannot establish the date of service with certainty, stop here and verify it before continuing.

How was the notice served?

Check the notice service clause in the tenancy agreement first. Where the agreement makes no specific provision, the methods set out on Form 4A are personal delivery, leaving it at the tenant's address, or registered post.

Enter the exact date written in box 4.6 of Form 4A. This date is used to work out the latest day the First-tier Tribunal can receive a tenant's application. Leave blank if you do not have a notice yet.

Enter the date the very first period of the original tenancy began. This date is used solely to calculate the 52-week (364-day) minimum period from the start of the tenancy.

Required. Enter the start date of a current monthly or weekly rental period to show which day of the month (or day of the week) your periods currently begin on. This does not default to your original tenancy start date because your current period boundary may differ following a period conversion or an agreed change. If you are not sure of your current period start day, stop and verify your paperwork manually.

How often is rent currently payable?

Select the current rental period frequency. Frequencies other than monthly or weekly require manual checking.

Has the rent been increased before under section 13 or by the First-tier Tribunal?

Select Yes if a previous section 13 notice or First-tier Tribunal determination has taken effect during this tenancy.

Enter the required details above to see your date estimates and verification checklist.

What This Tool Does

Estimate the earliest start date for a Form 4A rent increase in England, check the First-tier Tribunal deadline from box 4.6, and see what details to verify.

How It Is Calculated

This calculator runs entirely in your browser to estimate key dates for a proposed rent increase under section 13 using Form 4A for an assured periodic tenancy in England. First, it asks you to confirm that the tenancy is an assured periodic tenancy covered by Form 4A and checks whether manual review is required—for example, if a pre-1 May 2026 Section 8 or Section 21 notice is still active, if an older Form 4 is used, if an older rent review clause is involved, or if the service method is uncertain. Where calculation proceeds, the tool finds the latest of up to three baseline dates: two calendar months after valid service (excluding the service date itself, using the corresponding-day rule where a shorter target month caps at its final day rather than spilling over or counting 60 days); 52 weeks (364 days) from the start of the first period of the original tenancy; and, if there was a previous section 13 or tribunal increase, the last-increase floor. When a previous increase applies, you must state whether there has been a relevant section 13 or section 14 increase since 11 February 2003 (Form 4A box 4.4): if none applies, the floor is 52 weeks (364 days); if the box 4.4 date is known and its anniversary in the calendar year of the 52-week mark falls strictly more than 6 days after that 52-week date, the floor becomes 53 weeks (371 days); if the box 4.4 date is unknown or is later than the most recent increase date, the tool stops for manual verification.

Next, the tool moves the baseline date forward to align with the next boundary of your current rental period anchor, which you must enter directly (it does not default to the original tenancy start date, as your current period boundary may differ following a period conversion or an agreed change). Unlike the two-month service rule, if a monthly period anchor is on the 29th, 30th, or 31st and the target month has no matching calendar day, the tool does not guess a date and instead flags the result for manual verification. Finally, the tool displays the estimated earliest start date alongside the actual date entered from Form 4A box 4.6. The latest day for the First-tier Tribunal to receive a tenant application is calculated strictly as the day before the box 4.6 date (never from the estimated earliest date); if box 4.6 is left blank, no tribunal deadline is shown.

Can this tool tell me if a rent increase or notice is lawful or valid?

No. This tool only estimates dates from the figures you enter and highlights points to verify against your paperwork. It cannot decide whether a notice is legally valid or invalid, whether a percentage increase is fair, or what the First-tier Tribunal will decide.

Why are the two-month notice rule and the monthly period boundary alignment handled differently at the end of a month?

They follow two distinct legal rules. For the two-month notice period from service, calendar months use the corresponding-day rule (excluding the day of service): if a notice is served on the 31st and the month two months later only has 30 days, the two-month period ends on the 30th of that month. By contrast, aligning the start of the new rent to your tenancy period boundary requires matching the period start day; if your monthly period anchor is the 29th, 30th, or 31st and the target month has no matching day, the date requires manual checking rather than an automatic adjustment.

How is the First-tier Tribunal deadline worked out, and why does it need Form 4A box 4.6?

If a tenant wishes to apply to the First-tier Tribunal, the tribunal must receive the application before the proposed new rent start date stated in box 4.6 of Form 4A (meaning the latest day for receipt is the day before the box 4.6 date). Because the deadline is tied to the date written on the notice itself, this tool never substitutes the estimated earliest date if box 4.6 is left blank. If the box 4.6 date is earlier than the estimated earliest start date, the tool flags the discrepancy for you to verify.

Are student tenancies or older Form 4 notices automatically excluded or invalid?

Neither is automatic. Student accommodation falling under Schedule 1 paragraph 8 is excluded, whereas an ordinary private house or flat let by a private landlord is often covered as an assured periodic tenancy, and halls-style accommodation requires verification—if you are unsure, seek advice. For Form 4, whether an older Form 4 or Form 4A applies depends on the actual date of service rather than the date printed on the form; older notices are not automatically invalidated by the new rules, and preserved tenancies may still use Form 4 on or after 1 May 2026.

What happens if there was an older rent review clause or my current rental period boundary is different from the original start date?

If an increase under a rent review clause took effect before 1 May 2026, it retains effect and at least 52 weeks must pass before the next increase; if a clause only proposed an increase for 1 May 2026 or later, it does not apply. Because any involvement of an older rent review clause requires careful checking, the tool stops automatic calculation and directs you to manual review. For your rental period boundary, you must always enter the start date of a current rental period (which may differ from the original tenancy start date due to a period conversion or an agreed change); if you are unsure of the current period boundary, stop and verify your paperwork manually.

Limitations & Exceptions

  • You are not sure whether the tenancy is an assured periodic tenancy in England to which Form 4A applies, or whether one of the listed exclusions (such as a corporate tenant, social housing, AOA, regulated tenancy, lodger or resident landlord, Schedule 1 paragraph 8 student accommodation, Schedule 1 paragraph 3E long lease of 7–21 years or over 21 years, high/low rent limits, pre-1 April 1990 tenancy, or business/holiday use) applies.
  • The letting is student accommodation in halls or another arrangement where you are unsure whether Schedule 1 paragraph 8 applies.
  • A valid Section 8 or Section 21 notice was served before 1 May 2026 and remains in force, or possession proceedings were started before 1 May 2026 and have not ended.
  • An older Form 4 notice is being used (whether served before 1 May 2026 or under preserved tenancy rules on or after 1 May 2026).
  • There was a rent increase under a contractual rent review clause before 1 May 2026, or an older rent review clause purports to take effect on or after 1 May 2026.
  • You cannot confirm the current rental period boundary anchor date (for example, after a rental period conversion or an agreed change to payment dates).
  • Records of the original tenancy start date, previous section 13 or tribunal increase dates, or the box 4.4 first increase date after 11 February 2003 are missing, unclear, or inconsistent.
  • The proposed start date written in Form 4A box 4.6 is earlier than the estimated earliest start date calculated by this tool.
  • The current rent period is neither weekly nor monthly, or the monthly period anchor falls on the 29th, 30th, or 31st and the target month does not have a matching calendar day.
  • There is a dispute or uncertainty about when or how the notice was served, whether the service method was permitted by the tenancy agreement, how joint tenants were named, an existing tribunal case, an initial rent challenge within the first 6 months, or undue hardship.

This calculator cannot estimate dates for your tenancy

This tool only calculates dates where you can confirm the tenancy is an assured periodic tenancy in England to which Form 4A applies and none of the listed exclusions apply. Because you selected No or Not sure, no dates have been calculated. Please contact Shelter or a housing solicitor to check the rules that apply to your agreement.

Information on older Form 4 notices

Whether an older Form 4 or the new Form 4A is required depends on the date the notice was actually served, not the date printed on the form. An older Form 4 served before 1 May 2026 is not automatically invalidated by the change in the law, and preserved tenancies may still use an older Form 4 on or after 1 May 2026. Because transitional rules apply, this tool does not calculate dates or determine validity for Form 4 notices. Please seek advice from Shelter or a housing solicitor to verify your position.

Manual check required: older rent review clause

Automatic calculation has stopped because an older rent review clause is involved or its status is uncertain. If a rent increase under a rent review clause took effect before 1 May 2026, that increase remains in effect and any subsequent statutory increase must wait at least 52 weeks. If a rent review clause only proposed an increase to take effect on or after 1 May 2026, that clause does not apply. Because these transitional interactions require careful checking of your paperwork, please consult Shelter or a housing solicitor.

Manual check required: prior notice or ongoing possession proceedings

Because a valid Section 8 or Section 21 notice served before 1 May 2026 remains in force, or possession proceedings are still ongoing (or you are unsure), transitional rules apply to this tenancy. This tool cannot calculate dates automatically in these circumstances. Please check your paperwork with Shelter or a housing solicitor.

Manual check required: Form 4A box 4.4 date is unknown

Because there has been a previous section 13 or First-tier Tribunal increase and a relevant increase since 11 February 2003 applies, the box 4.4 date is needed to check whether the 52-week or 53-week rule applies. As this date is unknown, no earliest start date has been calculated. Please check your tenancy records or seek advice from Shelter or a housing solicitor.

Manual check required: box 4.4 date is later than the most recent increase date

The date entered for Form 4A box 4.4 (the first qualifying increase after 11 February 2003) is later than the effective date entered for the most recent rent increase. Because the first qualifying increase cannot fall after the most recent increase, automatic calculation has stopped. Please check your paperwork and verify both dates manually.

Manual check required: method of service is uncertain

Because you are not sure how the notice was served or whether the method used is permitted by the tenancy agreement or Form 4A, this tool cannot confirm the service date or calculate an earliest start date. Please check the notice clause in your tenancy agreement and speak to Shelter or a housing solicitor.

Manual check required: current rental period start date is missing or uncertain

A confirmed current rental period boundary anchor date is required to align the earliest start date with your tenancy periods. Because the current period start date is missing or uncertain, no date has been calculated. Please check your tenancy agreement, rent records, or any period conversion details with Shelter or a housing solicitor.

Cannot continue — conflicting dates in section 4.4

The information entered for box 4.4 conflicts with the other dates provided. Please stop here and check box 4.4 on Form 4A against your tenancy records before going any further.

Points to check against your paperwork

  • Check whether the notice uses Form 4A (or whether transitional rules for an older Form 4 apply based on the actual date of service or a preserved tenancy) and verify that every required section is completed.
  • Check that the names of all landlords and all joint tenants match the tenancy agreement.
  • Verify the exact date and method of service against the service clause in the tenancy agreement (or the default methods listed on Form 4A: personal delivery, leaving at the address, or registered post).
  • Confirm the current rental period boundary anchor date—taking into account any period conversion or agreed change since the original tenancy began—so you can check whether the proposed start date in box 4.6 lines up with the start of a new period.
  • Check records of the original tenancy start date, the effective date of any previous section 13 or First-tier Tribunal increase, and any box 4.4 date after 11 February 2003.
  • Compare the proposed start date in Form 4A box 4.6 against the estimated earliest start date; if they differ, verify all underlying dates and paperwork.
  • For tenants: if you wish to apply to the First-tier Tribunal, make sure the tribunal actually receives your completed application at least one day before the proposed start date written in box 4.6 of the notice.

Sources & References

Last verified: 2026-11-02

Next scheduled review: 2027-05-01

Legislation and official guidance

For general reference only. Results are estimates and do not constitute legal, tax, or financial advice for your specific situation. Always verify with official rules and notices.

This tool provides date estimates and a verification checklist based solely on the information you enter. It is for general guidance only and does not constitute legal advice. It never determines whether a rent increase, a proposed rent figure, or a Form 4 / Form 4A notice is lawful, valid, or enforceable. If box 4.6 and the estimated earliest date do not match, if your period anchor falls on a month-end without a matching day, or if transitional rules apply, please speak to Shelter, Citizens Advice, or a qualified housing solicitor.

Numbers you enter are calculated strictly in your browser and are never uploaded or stored.