About PlainMaternity

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What we do

PlainMaternity is a free, independent UK statutory parental-pay reference and projection tool. We help UK parents and HR teams understand and calculate Statutory Maternity Pay (SMP), Statutory Paternity Pay (SPP), Shared Parental Leave (SPL) and Pay (ShPP), Maternity Allowance (MA), Statutory Adoption Pay (SAP), and Tax-Free Childcare for the 2026-27 tax year. Everything is sourced from HMRC and GOV.UK primary publications.

Our calculator gives a week-by-week projection of statutory pay across the 39-week paid leave window, with optional layering of employer-enhanced policies. The decision engine compares Shared Parental Leave patterns against straight SMP. The reference pages document the eligibility tests, qualifying periods, KIT-day rules, and pension treatment for each scheme.

Our mission and why this exists

UK statutory parental pay is one of those areas where the rules are knowable in principle but tedious to assemble from the official sources. HMRC publishes rate tables; GOV.UK publishes scheme-specific consumer pages; ACAS publishes practical workplace application notes; the underlying legislation sits in five different Acts and Regulations. Nobody pulls it together in one place, with current numbers, in plain English.

We believe families making consequential decisions about maternity leave timing, partner leave splits, return-to-work plans, and childcare cost optimisation deserve a single authoritative reference that combines current statutory rates with a working calculator. That is what PlainMaternity exists to provide — without selling financial products, without commission-driven adviser referrals, and without storing anything you enter.

Who we are

PlainMaternity is published by PlainMaternity, an independent data-journalism publisher building specialist reference portals on UK and US public-sector data. PlainMaternity is a small operation — currently one human plus data-engineering workflows. We do not have a fabricated editorial team, named experts, or affiliated advisers. We are transparent about our process: human-curated editorial decisions, structured data sourcing, primary-source verification, and reader corrections welcomed.

This portal sits within a wider PlainMaternity of UK household-cost reference sites (Council Tax data, energy bills, ISA calculators) and US public-data portals covering crime statistics, school comparisons, housing data, and healthcare provider lookups.

Data sources — where the data comes from

PlainMaternity's content derives exclusively from authoritative UK government primary sources:

Methodology — how we process the data

PlainMaternity operates an editorial pipeline in which raw HMRC / GOV.UK source content is parsed into a structured SQLite database of statutory rates and rules, then served via Astro SSR pages. Every interpolated number on every page derives live from the database; nothing is hand-typed prose with embedded numerical claims.

This architecture means our content is auditable and resilient: when HMRC uprates a rate in April 2027, the underlying database is updated, and every page automatically reflects the new amount. There is no risk of a stale-by-a-month flat-rate figure appearing on one guide while another page shows the new one — single source of truth, propagated via SSR.

For computed quantities (such as worked SMP examples by salary band), the formulas are documented on the relevant page and the inputs are traceable to source. We do not invent numerical certainty where none exists in the underlying statutory framework. Full methodology details: methodology page.

Data currency and updates

UK statutory parental-pay rates uprate annually each April. PlainMaternity refreshes within 30 days of each April uprating. The Spring Budget and Autumn Budget also occasionally introduce changes — these are integrated within 30 days of publication. The bottom of every page carries a "last reviewed" date stamp.

The data vintage tag in the database records the source publication date for each statutory rate. Our content reflects the 2026-27 tax year (running 6 April 2026 to 5 April 2027). The Paternity Leave (Amendment) Regulations 2024 — which introduced the splitting of the 2-week paternity entitlement into two non-contiguous blocks — is already integrated.

Between annual upratings, we monitor HMRC source pages for changes and refresh content within 14 days of any material update. Corrections from readers are processed within 5 working days.

Limitations and what we are not

PlainMaternity is informational only. We are not regulated financial, tax, employment-rights, or legal advisers. We do not provide personalised advice; we provide a reference and projection tool.

Calculator outputs use simplifications — most notably approximating AWE as gross annual salary ÷ 52. The formal HMRC AWE definition uses the 8 weeks ending the qualifying week (weekly-paid) or 2 months (monthly-paid). For stable salaried roles the difference is negligible; for variable-pay or commission-heavy work the approximation can mislead. For your specific situation, consult ACAS, your employer's HR, or a qualified UK employment professional.

We do not cover: Universal Credit interaction in detail (changes mid-claim need DWP advice), salary sacrifice for pension purposes during the qualifying period (interaction with AWE is employer-policy-specific), immigration interactions (sponsorship and visa rules for non-UK workers), or surrogacy arrangements (different statutory rules apply).

What we do not do

PlainMaternity is informational only. We don't:

How we differ from official government pages

GOV.UK is the canonical source for UK statutory parental-pay rules. ACAS is the canonical source for practical workplace application. HMRC publishes the annual rate tables. So why does PlainMaternity exist?

Three structural reasons. First, the official pages are written one scheme at a time — there is no single page on GOV.UK that lets you compare SMP, MA, SPL, and SAP side-by-side or that shows the eligibility decision tree across all of them. Second, the rate publications are PDFs and bulleted lists; nobody offers an interactive calculator that combines current rates with employer-enhanced policy modelling. Third, the legislation is genuinely complex (five different Acts and Regulations sit underneath the GOV.UK summary pages), and the consumer pages elide the technical AWE calculation in ways that surprise families with variable pay or recent job changes.

PlainMaternity pulls all of this into one place. Where we differ from a government page, we cite the difference and link to the source. Where the official guidance is ambiguous, we surface the ambiguity rather than inventing certainty.

Our editorial principles

Six principles guide our content:

  1. Primary source first. Every statutory amount, eligibility threshold, and timing rule cites the HMRC or GOV.UK source. Where the source has changed, we date the change explicitly.
  2. Database-derived numbers only. No hand-typed numerical claims. Every interpolated figure on every page derives live from the database, so April-uprating cascades automatically.
  3. Acknowledge what we do not cover. Universal Credit interactions, immigration status, surrogacy, salary sacrifice during the AWE qualifying period — we flag these and refer readers to ACAS or qualified advisers.
  4. No financial product recommendations. We are a reference, not an affiliate.
  5. Reader corrections are central. A correction in our inbox is a higher-priority signal than a fleet-wide automated check.
  6. Org-only identity. PlainMaternity is the publisher; we do not invent named editorial staff or fabricate credentials. The team is a small operation and we are honest about that.

Funding and independence

PlainMaternity is operated independently. We may display Google AdSense advertising once the site has been approved by Google's reviewer process. Advertising revenue funds the data-engineering work that keeps the database current, the hosting infrastructure (Hetzner Cloud), and the editorial review cycles after each April uprating.

We do not accept paid placements for specific employers, financial products, or childcare providers. We do not accept sponsored content. Our editorial choices are independent of any commercial relationship, including the AdSense relationship with Google itself.

Privacy and analytics

PlainMaternity uses Umami analytics for aggregate page-view metrics. We do not use cookies for tracking or advertising. Calculator inputs never reach our servers — all calculation runs in your browser. For full details, read our privacy policy.

If we display advertising on this site (via Google AdSense), the integration loads Google's adsbygoogle.js script and Google may use cookies to serve relevant ads. You can opt out at Google Ads Settings. When advertising is active, we implement Google's Consent Mode v2 with EU/UK defaults — analytics and ad-targeting cookies are blocked until you give explicit consent.

How to use this site

Most readers arrive looking for a specific answer: what will SMP pay on my salary, can my partner take Shared Parental Leave, do we qualify for Tax-Free Childcare. Start with the calculator if you want concrete numbers; the decision engine if you are comparing leave-pattern options; the comparison page for a side-by-side look at all schemes; or the individual leave-type pages for canonical statutory rules.

For broader context, the explainer guides walk through specific topics — how SMP works in detail, the Shared Parental Leave mechanics, Tax-Free Childcare eligibility, returning to work, and so on. The research pages are deeper analysis pieces with original computation and citations.

The scope of our coverage

PlainMaternity covers six UK statutory parental-pay schemes in detail: Statutory Maternity Pay (SMP) for employed birth mothers; Statutory Paternity Pay (SPP) for partners; Shared Parental Leave and Pay (SPL / ShPP) for couples; Maternity Allowance (MA) administered by DWP for the self-employed and ineligible-for-SMP; Statutory Adoption Pay (SAP) for adopting parents matched through a UK agency; and Tax-Free Childcare (TFC) as the working-parent childcare benefit. Each gets a dedicated reference page with eligibility, qualifying period, pay structure, who-pays, and notice requirements.

We also cover the calculation mechanics, including the 90% Average Weekly Earnings step in the first 6 weeks of SMP/SAP, the flat statutory rate uprated annually each April, the Lower Earnings Limit qualifying threshold, KIT (Keeping In Touch) and SPLIT days, pension contributions during paid leave, and the interaction between TFC and the 30 hours free childcare scheme in England.

We have eight long-form guides covering practical questions: how SMP works, Shared Parental Leave explained, Tax-Free Childcare eligibility, 30 hours free childcare rules, returning to work, statutory-vs-enhanced employer policies, MA vs SMP decision tree, and pension contributions during leave. Three original research pages cover SMP net take-home arithmetic by salary band, why Shared Parental Leave uptake stays below 5%, and the Tax-Free Childcare vs childcare-vouchers comparison.

Accessibility and design

PlainMaternity is built to be readable on phones, tablets, and desktops, with WCAG 2.1 AA-level contrast across light and dark modes. Tables are horizontally-scrollable on narrow viewports. Forms have explicit labels and 44×44 minimum tap targets per Apple Human Interface Guidelines. Animated content respects the user's prefers-reduced-motion preference. If you find an accessibility issue, please email hello@plainmaternity.co.uk and we will fix within 14 days.

The site uses Newsreader (display) and Inter (body) as the type pair, with a warm peach + sage palette chosen for the parental subject matter. The design is consistent across all pages and components; the manifest at /config/portal-manifest.json documents the palette as the source of truth for the build pipeline.

Why we built a separate maternity portal

UK statutory parental-pay rules sit at an unusual intersection: regulatory complexity that affects nearly every UK family, but spread across multiple government websites that few readers navigate together. The financial-services industry produces calculators for ISAs, pensions, and mortgages because there is commercial gain in lead-generation; nobody monetises maternity-pay decisions, so general-purpose providers do not invest in good tools for them.

PlainMaternity is the result. We treat the niche the way Stack Overflow treats programming questions: a single canonical reference, kept current, with a working calculator and decision-support tooling, free for any reader to use without account creation.

Annual refresh cycle

HMRC publishes updated rates for the new tax year each March/April. The Lower Earnings Limit, SMP flat rate, ShPP flat rate, MA flat rate, and SAP flat rate are uprated together. Tax-Free Childcare limits typically stay constant for several years at a time but the household income cap is reviewed periodically. The 30 hours free childcare rules are reviewed each Autumn Statement for the following academic year.

Our refresh procedure: (1) editorial scan of HMRC and GOV.UK source pages within 14 days of each Spring Budget and April uprating; (2) database update of rate tables, eligibility thresholds, and citation URLs; (3) automated schema-validation that every leave type has all required fields populated; (4) full pre-push integrity scan covering 254 source checks before deployment; (5) post-deploy monitoring via Uptime Kuma and Sentry.

The bottom of every page carries a "last reviewed" timestamp. Pages whose data is older than the most recent April uprating receive a visible "rates being reviewed" notice until refresh is complete.

Open source and transparency

The PlainMaternity portal codebase is private but the framework is reusable across our portal network. We document our editorial methodology, scoring frameworks, and quality gates in public-facing pages so readers can audit our process. Our SSR architecture means every page is generated server-side from the structured rate database — no opaque computed values, no hidden assumptions.

We do not accept anonymous contributions or unsolicited content. We do accept corrections from any reader, with priority given to corrections that cite primary HMRC, GOV.UK, ACAS, or legislation sources. Anonymous corrections are still acted on if independently verifiable.

Contact and corrections

For corrections, data errors, accessibility issues, or business inquiries, email hello@plainmaternity.co.uk. We aim to respond within 5 working days. See also our contact page and methodology.

If you find a wrong rate, outdated rule, or misleading worked example, email the page URL and the correction. Substantive corrections are refreshed within 14 days and noted in the page-level changelog where appropriate.

For press, partnership, or licensing inquiries, contact us with subject "Business" or "Press". We respond to reasonable inquiries within 5 working days.

For accessibility issues, screen-reader compatibility problems, or other access barriers, please use the same email — accessibility fixes are treated as P0 and resolved within 14 days.

Audience and use cases

PlainMaternity serves four main audiences. Expectant parents use the calculator to model the cash flow of maternity leave on their specific salary and employer policy, then use the leave-type pages to confirm eligibility and notice requirements. Partners use the paternity and Shared Parental Leave pages to understand their entitlement, the 2-week paternity split (post-2024 rules), and whether SPL is financially worth pursuing for their family.

Self-employed parents use the Maternity Allowance pages and the calculator's MA route to understand their pay entitlement (which is usually less generous than SMP for higher earners but available to a broader claimant base). HR teams and small-business owners use the leave-type detail pages as a single reference for the statutory framework, employer-recovery rates from HMRC, and the interaction with enhanced contractual policies.

We also see usage from journalists and policy researchers who need a current, citable single source for UK statutory parental-pay rates with the underlying legislation linked.