Shared Parental Leave vs Extended Maternity Leave: Financial Comparison 2026

What each route offers

Extended maternity leave gives the mother up to 52 weeks away from work: 26 weeks of Ordinary Maternity Leave, followed by up to 26 weeks of Additional Maternity Leave. Pay runs for the first 39 weeks only -- the final 13 weeks are unpaid. Statutory Maternity Pay (SMP) starts at 90% of average weekly earnings (AWE) for the first 6 weeks, then drops to the flat rate of GBP 194.32 per week (or 90% of AWE if lower) for weeks 7 to 39.

Shared Parental Leave (SPL) lets eligible parents divide up to 50 weeks of leave and 37 weeks of pay between them after the mother ends her maternity leave. The mother must take a minimum of 2 weeks' maternity leave (4 weeks if she works in a factory or other regulated environment). Any remaining leave and pay can then be shared in up to 3 blocks each. Shared Parental Leave Pay (ShPP) is paid at GBP 194.32 per week from the first week -- there is no 90% AWE premium period for ShPP regardless of who takes the leave.

Both routes allow the leave-taker to keep their job, benefit from continuity of employment and accrue annual leave throughout. Neither route affects the right to return to the same job (for leave up to 26 weeks) or a suitable alternative (for longer leave).

Key 2026/27 figures used in this comparison

• SMP / ShPP standard rate: GBP 194.32 per week
• SMP weeks 1-6: 90% of average weekly earnings (no cap)
• SMP weeks 7-39: GBP 194.32 per week (or 90% AWE if lower)
• ShPP: GBP 194.32 per week from week 1 (no 90% AWE premium)
• Lower Earnings Limit (LEL): GBP 123 per week (GBP 6,396 per year)
• Personal Allowance: GBP 12,570 per year (GBP 241.73 per week)
• Basic rate Income Tax: 20% on income GBP 12,571 to GBP 50,270
• Employee NI: 8% on earnings GBP 12,570 to GBP 50,270 per year
• Employer NI: 15% on earnings above GBP 5,000 secondary threshold
• Full new State Pension: GBP 241.30 per week (GBP 12,548 per year, 35 qualifying years)
• Statutory Paternity Pay (standard): GBP 194.32 per week for 2 weeks
• KIT days (maternity): up to 10 days; SPLIT days (SPL): up to 20 days each

Scenario 1: single-earner couple, mother on GBP 35,000

Assume the mother earns GBP 35,000 per year (AWE roughly GBP 673 per week). The partner has no income. The household is entirely dependent on the mother's earnings or statutory pay during leave.

Extended maternity leave (52 weeks)

Weeks 1-6: 90% of GBP 673 = GBP 605.70 per week. Total: GBP 3,634 gross. Weeks 7-39 (33 weeks): GBP 194.32 per week. Total: GBP 6,413 gross. Weeks 40-52 (13 weeks): unpaid. Total: GBP 0.

Total gross statutory income for 52 weeks: approximately GBP 10,047.Against a normal annual salary of GBP 35,000, the family faces a gross income shortfall of approximately GBP 24,953 over the year. Because GBP 10,047 falls below the Personal Allowance of GBP 12,570, no Income Tax is due on the statutory pay -- the household keeps almost all of it.

If the mother instead ends maternity leave after 26 weeks and the non-earning partner takes up to 24 weeks of SPL (which would also pay GBP 194.32 per week for up to 11 further paid weeks if 37 total ShPP weeks remain), total household statutory pay barely changes in a single-earner household because only one person is receiving pay at a time. The key advantage of SPL in a single-earner scenario is flexibility -- the mother can return to her full salary sooner, dramatically increasing household income for the second half of the year.

SPL with early return (mother returns at week 14)

Mother takes 6 weeks SMP at 90% AWE (GBP 3,634) plus 8 weeks at GBP 194.32 (GBP 1,555) = GBP 5,189 statutory pay, then returns to GBP 35,000 salary. From week 15, mother earns GBP 35,000 x (38/52) = approximately GBP 25,577 from her return to year-end. Partner takes 24 weeks ShPP at GBP 194.32 = GBP 4,664.

Total household income: GBP 5,189 + GBP 25,577 + GBP 4,664 = approximately GBP 35,430 -- compared with GBP 10,047 under full 52-week maternity leave. The early-return SPL route recovers nearly the full annual salary even in a household where only one person earns. The trade-off is reduced bonding time for the mother.

Scenario 2: dual-earner couple, both on GBP 35,000

Both parents earn GBP 35,000 (AWE GBP 673 per week each). This is the scenario where SPL provides the greatest financial flexibility compared with extended maternity leave.

Extended maternity leave (mother takes 52 weeks)

Mother: GBP 10,047 statutory pay (as above). Partner: GBP 35,000 salary for the full year, plus 2 weeks Statutory Paternity Pay (GBP 194.32 x 2 = GBP 389) at the start. The partner's salary does not reduce during paternity leave -- SPP replaces paternity leave pay, not the salary. Most employers continue to pay full salary during the 2-week paternity period, meaning SPP is absorbed into the pay rather than added on top.

Total household income (52 weeks): GBP 10,047 + GBP 35,000 = GBP 45,047 gross. The mother's income is GBP 24,953 below normal; the partner's is unchanged. Combined income loss versus both working full-time (GBP 70,000) is GBP 24,953.

SPL split equally (25 weeks each)

Mother takes 6 weeks SMP at 90% AWE (GBP 3,634) plus 19 weeks at GBP 194.32 (GBP 3,692) = GBP 7,326 statutory pay. She works weeks 26-52 = 27 weeks at GBP 35,000 salary, earning GBP 35,000 x (27/52) = approximately GBP 18,173.

Partner takes 2 weeks standard paternity leave (GBP 194.32 x 2 = GBP 389) then works weeks 3-25, earning GBP 35,000 x (23/52) = approximately GBP 15,481. Partner then takes 25 weeks ShPP at GBP 194.32 = GBP 4,858 (weeks 26-50, overlapping with mother's return). Partner works week 51-52 = 2 weeks, earning roughly GBP 1,346.

Total household income (SPL split equally): GBP 7,326 + GBP 18,173 + GBP 389 + GBP 15,481 + GBP 4,858 + GBP 1,346 = approximately GBP 47,573 gross. This is GBP 2,526 higher than the extended-maternity scenario, with both parents sharing the childcare more evenly. The income loss versus both working full-time is reduced to approximately GBP 22,427.

Note: figures are gross before Income Tax. All statutory pay below GBP 12,570 Personal Allowance is free of Income Tax. Partner salary above GBP 12,570 is taxed at 20% basic rate. NI is deducted at 8% on earnings between GBP 12,570 and GBP 50,270.

NI credits and State Pension impact

Protecting your NI record during leave is important but easy to overlook. The full new State Pension (GBP 241.30 per week = GBP 12,548 per year in 2026/27) requires 35 qualifying years. A year counts as qualifying if you have paid or been credited with sufficient NI contributions.

While receiving SMP or ShPP at or above the Lower Earnings Limit (GBP 123 per week in 2026/27), you are treated as having paid Class 1 NI contributions. The weeks count towards your NI qualifying year automatically -- you do not need to do anything. This applies regardless of whether you are the mother or the partner taking SPL.

The 13 unpaid weeks at the end of extended maternity leave, or any unpaid SPL weeks, are different. HMRC does not automatically credit NI for unpaid leave weeks. To protect your NI record during this period, the parent concerned should ensure they are the named claimant on a Child Benefit claim. Claiming Child Benefit -- even if the High Income Child Benefit Charge (HICBC, which applies above GBP 60,000 adjusted net income in 2026/27) means the benefit is later clawed back through Self Assessment -- generates free Class 3 NI credits for the named claimant. This can be worth GBP 824 per qualifying year added to the State Pension over a lifetime.

Where both parents have gaps in their NI record, the one with fewer qualifying years should be named as Child Benefit claimant. The Child Benefit recipient can be changed by contacting HMRC -- it does not have to be the mother.

Pension contributions during maternity and SPL

Auto-enrolment continues throughout paid leave, but contributions are calculated on actual pay received -- not your normal salary. On GBP 194.32 per week (GBP 10,105 per year), a 5% employee contribution yields just GBP 9.72 per week (GBP 505 per year) versus GBP 33.65 per week (GBP 1,750 per year) on GBP 35,000 salary. The pension pot impact is significant over a year.

Employer contributions are a statutory protection. Under the Equality Act 2010 and HMRC rules, the employer must continue to pay their contractual employer contribution rate on the employee's normal full pay -- not on the reduced statutory pay -- throughout all paid leave (both the paid SMP/ShPP weeks and any period of enhanced pay). This means employer contributions do not drop during paid leave, even though employee contributions do. For an employer contribution of 3% on a GBP 35,000 salary, the employer continues to contribute GBP 1,050 per year to the pension throughout paid leave.

During unpaid leave (weeks 40-52 of maternity leave, or unpaid SPL blocks), the employment contract is suspended for pay purposes. Employer pension contributions are not required during unpaid leave, and employee contributions are not deducted because there is no pay to deduct from. If you want to maintain pension contributions during unpaid leave, you would need to make personal contributions directly to your pension provider.

The Pension Annual Allowance for 2026/27 is GBP 60,000, so pension contributions are extremely unlikely to be an issue for most employees during a leave year. However, if you have triggered the Money Purchase Annual Allowance (GBP 10,000) by flexibly accessing a pension, that limit applies instead.

Employer enhanced pay -- the factor that changes everything

The statutory calculations above assume the employer pays only the statutory minimum. In practice, many larger employers -- particularly in financial services, law, the civil service and public sector -- offer substantially enhanced maternity pay: commonly full salary for 8-26 weeks, then half salary for a further period.

Critically, employers are not legally required to offer the same enhancement to SPL as they do to maternity pay. Employment tribunal case law (including the Court of Appeal ruling in Ali v Capita Customer Management and Hextall v Chief Constable of Leicestershire Police) has confirmed that paying enhanced maternity pay but only statutory ShPP to fathers does not constitute unlawful sex discrimination, provided the pay difference reflects the biology of maternity rather than a general preference for female employees.

For a mother on GBP 35,000 whose employer offers 26 weeks at full pay followed by 13 weeks at half pay: weeks 1-26 at GBP 673/week = GBP 17,498; weeks 27-39 at GBP 336.50/week = GBP 4,375; weeks 40-52 unpaid. Total: GBP 21,873 -- more than double the statutory GBP 10,047. Against this, statutory-only ShPP at GBP 194.32 per week looks far less attractive.

Always obtain your employer's maternity policy and SPL policy in writing before making a decision. The gap between enhanced maternity pay and statutory ShPP is the single biggest variable in the entire SPL vs maternity calculation.

Keep In Touch and SPLIT days: earning while on leave

Both leave types allow limited working without ending the leave period or losing statutory pay entitlement.

On maternity leave, a mother may work up to 10 Keep In Touch (KIT) daysduring weeks 2-39 of leave without triggering the end of maternity leave or forfeiting SMP. The day's pay is agreed with the employer and HMRC has no prescribed rate -- in practice most employers pay the normal daily rate. A KIT day does not reduce the total 39 weeks of SMP; SMP continues as normal. KIT days during week 1 of maternity leave are not permitted.

Under SPL, each parent on leave may work up to 20 Shared Parental Leave In Touch (SPLIT) days without ending their SPL block or forfeiting ShPP. This is double the KIT day allowance, which matters where parents want to manage a gradual return or cover project peaks. Earnings from SPLIT days are taxable employment income in the normal way but do not reduce ShPP.

For a higher-rate taxpayer on GBP 65,000 (daily rate roughly GBP 250), 10 KIT or 20 SPLIT days could generate GBP 2,500-GBP 5,000 of additional gross income during leave -- meaningfully reducing the household income shortfall without formally ending the leave period.

Tax treatment of SMP and ShPP

SMP and ShPP are employment income -- not social security benefits. They are subject to Income Tax and Class 1 NI under PAYE in exactly the same way as salary. The employer deducts tax and NI before paying the statutory amount. HMRC then partially reimburses the employer for the cost of statutory pay.

At GBP 194.32 per week, annual statutory pay is GBP 10,105. This is below the Personal Allowance of GBP 12,570, so if the statutory pay is the only income for the tax year, no Income Tax is due. However, the P45 or P60 position matters: if the leave straddles two tax years and the parent earns salary earlier in the tax year before going on leave, the salary portion may use up part of the Personal Allowance, potentially leaving some of the statutory pay taxable.

NI during statutory pay: Class 1 employee NI at 8% applies on weekly earnings between GBP 242 (Primary Threshold / 52 weeks) and GBP 967 (Upper Earnings Limit / 52 weeks). At GBP 194.32 per week, pay is below the Primary Threshold of GBP 242 per week -- so no employee NI is deducted on statutory pay. The employer also pays no employer NI on payments below the GBP 96 per week secondary threshold (GBP 5,000 per year / 52).

Enhanced employer maternity pay above GBP 194.32 per week is fully taxable and subject to NI in the normal way. Tax is deducted under PAYE using the employee's current tax code, which continues to apply throughout paid leave.

Who should choose extended maternity and who should choose SPL?

Choose extended maternity leave if: the mother's employer offers significantly enhanced maternity pay but only statutory ShPP. In this case, the financial case for SPL is weak regardless of the flexibility benefits. Also choose maternity leave if the mother is the sole or primary earner, wishes to maximise bonding time, and the household can absorb the income reduction for 52 weeks.

Choose SPL if: both employers pay only statutory rates (so neither parent has an enhanced-pay advantage); the mother's career trajectory means an early return has significant long-term income benefits; the father or partner has a higher salary than the mother (making it more efficient for the mother to return and the partner to take leave); or both parents genuinely want to share childcare equally in the first year. SPL also works well when the partner's employer offers informal enhanced pay for SPL -- increasingly common in larger progressive employers.

The numbers show SPL can generate GBP 2,500-GBP 25,000 more household income over 12 months compared with full extended maternity leave, depending on the scenario. But employer enhancement policies remain the dominant variable. Check both employers' policies before committing to either route.

Frequently Asked Questions

Calculators for this topic