How we source our data
Every deadline, rate and statistic on NestIQ Wealth comes from a named public source. This page sets out exactly which datasets we use, how our guides and calculators are researched and reviewed, and where the limits of that information sit.
Our editorial principles
Primary sources only
If a figure cannot be traced to legislation, a government dataset or a regulator, it does not go on the page. Guides carry a sources list so you can check the original yourself.
Dated and reviewed
Every guide and tool shows a published and last-reviewed date. Pages are revisited when the law, threshold or dataset changes, and reviewed at least annually regardless.
No paid placement
We take no commission from brokers, agents, insurers or contractors. Costs shown are illustrative market ranges, never quotes, and no supplier can pay to appear.
Models are shown, not hidden
Each calculator states its assumptions on the page — stress rates, income multiples, void allowances, tax rates and rounding — so you can change them to match your own position.
The sources we use
Law, compliance and deadlines
Statutory duties, renewal cycles, notice periods and penalty levels.
- legislation.gov.uk. The primary text of every Act and statutory instrument we rely on, including the Housing Act 2004, the Tenant Fees Act 2019, the Electrical Safety Standards Regulations 2020 and the Gas Safety (Installation and Use) Regulations 1998.
- GOV.UK guidance. Departmental guidance on how duties are applied in practice — right to rent, deposit protection, EPC minimum standards, How to Rent and possession procedure.
- Regulators and approved schemes. HSE for gas safety, the three approved deposit protection schemes, local authority licensing pages for HMO and selective licensing, and HMRC manuals for tax treatment.
Prices, rents and market data
Values, growth rates and rental benchmarks used in forecasts and area reports.
- HM Land Registry. Price Paid Data for individual sold prices and the UK House Price Index for capital growth by local authority. Land Registry data is Crown copyright, used under the Open Government Licence.
- Office for National Statistics. Private rental price indices, earnings growth and inflation series. Long-run averages in the wealth forecast use ten years of published data rather than a single year.
- Ordnance Survey and open postcode data. Postcode geography, coordinates and administrative boundaries used to attach a property to the right local authority and dataset.
Area intelligence
The neighbourhood picture behind a postcode report.
- Nomis and the Census. Population, tenure split, household composition, age profile and property mix at output area and local authority level.
- Police.uk. Recorded street-level crime by category for the months published by the relevant force. Crime counts are reported as published — they reflect recorded crime, not total crime.
- DfE Get Information About Schools and Ofsted. School names, phase, age range, pupil numbers and coordinates from the GIAS register, matched to the latest published Ofsted overall effectiveness rating and inspection date.
Public sector datasets are used under the Open Government Licence v3.0 and contain public sector information licensed accordingly. Land Registry and ONS data are Crown copyright.
How a guide or calculator is produced
- 1Scope the question a landlord is actually asking, and identify the legislation or dataset that answers it.
- 2Read the primary source in full — the Act, regulation, statutory guidance or dataset documentation — rather than secondary commentary.
- 3Draft the page with the rule, the date or cycle, the consequence of getting it wrong, and a plain-English explanation of what to do.
- 4Cross-check every figure against the compliance rules engine used in the product, so guidance and software never disagree.
- 5Publish with a visible author, publish date, review date and a sources list linking back to the originals.
- 6Re-review on change or at least annually, and correct promptly when a reader flags an error.
Limits of this information
- •Calculators are illustrations, not offers, quotes or regulated advice. Lenders, HMRC and local authorities apply their own criteria.
- •Stamp duty and deposit tools cover England (and Northern Ireland for SDLT). Scotland and Wales operate separate regimes with different rates and caps.
- •Public datasets are published on a lag. Sold prices, crime data and Ofsted outcomes reflect the most recent release, not today.
- •Area statistics describe an area, not an individual property. Two houses in the same postcode can perform very differently.
- •Where a rule is being reformed, we describe the position in force and flag the expected change separately.
Corrections and questions
If a figure looks wrong, tell us. We check the primary source, correct the page where needed and update the review date so the change is visible.
Frequently asked questions
Where does NestIQ Wealth get its compliance dates and rules?
Every statutory deadline, renewal cycle and penalty level is taken from primary sources: legislation.gov.uk for the Act or regulation itself, GOV.UK guidance for how it is applied in practice, and the responsible regulator or scheme where one exists. We never restate rules from other blogs or commercial guidance without checking the source.
Which public datasets power postcode and area analysis?
Area intelligence uses HM Land Registry Price Paid and UK House Price Index data for sold prices and capital growth, ONS and Nomis for population, tenure, age profile and household mix, Police.uk for recorded crime, the Department for Education's Get Information About Schools register plus Ofsted inspection outcomes for schools, and open mapping data for distances and travel times.
Are your calculators regulated financial advice?
No. The calculators are illustrative models that show the arithmetic behind a decision. They do not account for your full circumstances, lender criteria, tax position or the specifics of a property. Nothing on the site is legal, tax, mortgage or investment advice.
How often is content reviewed?
Guides and tools carry a visible last-reviewed date. We revisit a page whenever the underlying legislation, deadline, threshold or penalty changes, and we run a scheduled review of every guide at least annually.
Does IQ, your AI assistant, invent figures?
IQ works from your own portfolio data and the sourced datasets described on this page. It summarises, explains and highlights — it does not create statutory dates. Compliance deadlines shown in the product come from the rules engine, not from a language model, so they are deterministic and auditable.
How do I report something that looks wrong?
Email support@nestiqwealth.com with the page and the figure you are querying. We check the primary source, correct the page if it is wrong, and update the review date so you can see when the change was made.