Disclaimer

No professional advice

This website is not financial, tax, legal, accounting, investment, retirement, estate, insurance, mortgage, lending, actuarial, valuation, business, or cross-border planning advice. It is not a substitute for advice from qualified professionals who review your specific facts, objectives, documents, risks, constraints, jurisdiction, timing, and applicable rules. Using this website does not create an advisor-client, planner-client, accountant-client, lawyer-client, broker-client, lender-client, fiduciary, or other professional relationship.

Simplified modelling

Calculator outputs are simplified estimates based on user inputs, default settings, source data where applicable, and stated assumptions. They are intended to illustrate how planning projections may be built, not to produce a complete or personalized recommendation, official determination, filing position, eligibility decision, valuation, underwriting result, lending decision, or transaction analysis.

Results may not reflect every relevant fact, rule, exception, election, credit, deduction, surtax, benefit interaction, account rule, phase-out, contract term, fee, penalty, timing issue, rounding convention, market risk, sequence-of-return risk, liquidity issue, household circumstance, residency issue, cross-border issue, or documentation requirement. A calculator may omit considerations that are material in a particular situation.

User inputs and assumptions

Calculator results depend on the information entered by the user and on how each field is interpreted. If an input is missing, incomplete, outdated, estimated, entered in the wrong period, entered in the wrong currency, entered before or after tax when the opposite is intended, or otherwise misclassified, the result may be materially different from the result that would apply to the actual facts. Default assumptions are modelling conveniences, not recommendations.

Some tools use simplified formulas or source-data summaries. Even where a formula is standard in finance, accounting, tax, pension, mortgage, or benefit education, the surrounding real-world calculation may require additional rules, professional judgement, official forms, contracts, source documents, or institution-specific treatment.

Future uncertainty

Tax laws, benefit rules, government programs, market conditions, inflation, interest rates, life expectancy, employment income, family circumstances, residency, and personal goals may change. Future outcomes may differ materially from any projection, example, or estimate shown on this website.

Source data, AI assistance, and review limits

OpenBook Planning strives to use clear methods, visible assumptions, and source-linked reference data where practical. However, no representation is made that any content is complete, current, error-free, or suitable for a particular purpose. Financial rules, rates, forms, administrative practices, and institutional policies can change or be interpreted differently. Content on this site may be generated, drafted, reviewed, or assisted by artificial intelligence, and AI-assisted content can contain omissions or errors. Independent verification of any critical information is recommended.

Consult qualified professionals

You should not rely on this website or its calculators as the sole basis for financial, tax, legal, accounting, investment, retirement, estate, or cross-border planning decisions. For personal planning decisions, consult qualified professionals who can review your specific situation.

Personal views

Any views, examples, or educational commentary on this website are personal in nature and do not necessarily reflect the views of any employer, professional organisation, or affiliated entity.

Advertising, sponsorships, and affiliate links

OpenBook Planning may display advertising, sponsored placements, or affiliate links. These relationships may generate revenue for OpenBook Planning. Advertising, sponsorship, or affiliate relationships do not determine calculator formulas, educational methodology, calculator rankings, CLARITY mappings, or reference data. OpenBook Planning is not affiliated with an advertiser, sponsor, merchant, platform, or service provider merely because an ad or affiliate link appears on the site.

No guarantees

No representation is made that any calculator, article, example, or estimate is complete, accurate, current, or suitable for a particular purpose. Use of this website is at your own discretion.