How to Calculate Your Maternity Pay

Why Calculating Your Maternity Pay Matters

Understanding your maternity pay before you go on leave is essential for household budgeting. A 2025 survey by the Maternity Leave Association found that 68% of parents underestimated their income reduction during leave, leading to financial stress during what should be a joyful time. By calculating your expected payments in advance, you can save, plan, and avoid financial surprises.

Each country—and in the US, each state—has its own formula for calculating maternity pay. The key variables are:

• Your average weekly or monthly earnings before leave
• The replacement rate (e.g., 55%, 67%, 80%, 90%)
• Weekly or monthly benefit caps
• The duration of paid leave
• Whether your employer offers a top-up
• Tax implications of the payments

UK: Calculating Statutory Maternity Pay (SMP)

The UK's SMP has a two-tier payment structure. Here is how to calculate it:

Step 1: Determine Your Average Weekly Earnings (AWE)

Your AWE is calculated over the 8-week period ending with the "qualifying week" (the 15th week before your baby is due). Include all gross pay: salary, bonuses, overtime, commission, and taxable benefits. Divide the total by 8 to get your AWE.

Step 2: Calculate the First 6 Weeks

For the first 6 weeks of maternity leave, you receive 90% of your AWE. There is no cap on this portion.

Step 3: Calculate the Remaining 33 Weeks

For the remaining 33 weeks of SMP, you receive the lower of:

• 90% of your AWE, or
• The statutory weekly rate (£184.03 in 2025/26)

For most full-time workers earning above the threshold, the statutory rate applies.

Example: UK SMP Calculation

This represents a 74% reduction in income compared to working. This is why many UK families rely on savings, partner income, or enhanced employer schemes to bridge the gap.

Canada: Calculating EI Maternity and Parental Benefits

Canada's EI system calculates benefits based on your average insurable weekly earnings over the 26 weeks before your claim starts. Here is the step-by-step process:

Step 1: Determine Your Total Insurable Earnings

Add up your gross earnings for the 26 weeks before your EI claim begins. The maximum insurable earnings for 2025 is $63,200 annually ($1,216.92 per week). If you earn more than this, only the first $1,216.92 per week counts.

Step 2: Calculate Your Weekly Average

Divide your total insurable earnings by the number of weeks worked in the 26-week period (up to 26). If you worked fewer than 26 weeks due to gaps, divide by the actual number of weeks worked.

Step 3: Apply the Benefit Rate

For the Standard option, multiply your weekly average by 55%. The maximum weekly benefit is $668 (in 2025). For the Extended option, multiply by 35%, with a maximum of $425 per week.

Example: Canada EI Calculation

Australia: Calculating Paid Parental Leave

Australia's PPL calculation is the simplest of the four systems because it pays a flat rate—the national minimum wage—regardless of your prior earnings:

Step 1: Confirm Eligibility

Ensure you meet the work test (330 hours in 10 of 13 months), income test ($175,000 or less), and residency requirements.

Step 2: Determine the Payment Rate

The PPL rate is based on the national minimum wage. As of July 2025, the minimum wage is $24.10 per hour. For a standard 38-hour week, this equals $915.80 per week (before tax).

Step 3: Calculate Total PPL

Multiply the weekly rate by 18 weeks (PPL) and 2 weeks (DaPP for partner):

• PPL (18 weeks): $915.80 × 18 = $16,484.40
• DaPP (2 weeks): $915.80 × 2 = $1,831.60
• Total government payments: $18,316.00

For high-income earners, the Australian PPL represents a significant pay reduction. For example, someone earning $120,000 per year would receive only about 15% of their normal income during PPL. This is why checking for employer top-up schemes is so important in Australia.

US State Programs: Calculating Paid Family Leave

US state programs vary significantly. Here are calculations for the most common state programs:

California PFL Calculation

New York PFL Calculation

Adding Employer Top-Ups to Your Calculation

Employer top-ups can significantly increase your total maternity pay. Here are common top-up structures and how to calculate them:

• Full salary top-up: Employer pays the difference between statutory benefits and your normal salary. Example: If your weekly salary is $1,500 and EI pays $668, your employer pays $832/week.
• Percentage top-up: Employer supplements statutory pay to reach a target percentage (e.g., 80% or 90% of salary). Example: If EI pays 55% and the target is 90%, the employer pays the 35% difference.
• Fixed-period top-up: Employer pays full salary for a set number of weeks (e.g., 6 or 12 weeks), after which you receive only statutory benefits.

Tax Considerations

Maternity pay is generally taxable income in all four countries:

• UK: SMP is taxed at your normal rate through PAYE. However, if your income drops significantly, you may overpay tax and receive a refund at year-end.
• Canada: EI benefits are taxable at both federal and provincial rates. Service Canada withholds a default 10% tax, which may not cover your actual liability. Consider requesting additional tax withholding (using Form T1218) if your tax rate is higher.
• Australia: PPL is taxable income and included in your annual tax return. Tax is withheld at the standard rate.
• US: State paid family leave benefits may or may not be taxable depending on who funded the premiums. If you paid premiums with after-tax dollars, benefits are generally not taxable. If your employer paid the premiums, benefits are taxable as wages.

Creating Your Total Leave Budget

To create a comprehensive budget for your parental leave, follow these steps:

1. Calculate your statutory benefits (SMP, EI, PPL, or state PFL) using the methods above
2. Add any employer top-up payments
3. Add government child benefits (UK Child Benefit, Canada Child Benefit, Australia Family Tax Benefit)
4. Subtract expected tax withholding from your total
5. Compare the total to your normal monthly household income
6. Identify the monthly shortfall and plan how to cover it (savings, partner income, reduced expenses)