IN THE FIELD GUIDE
Kumberi
kumberi.co.uk
Kumberi is a UK-focused financial decision modeling software that helps users understand the impact of life choices such as buying a house, changing jobs, or retiring early under current UK tax and pension rules. It provides year-by-year projections, side-by-side comparisons of different scenarios, and transparent, inspectable assumptions to aid decision-making before committing to irreversible choices.
THE PRODUCT, BEYOND THE PITCH
Editorially reviewed · Sources checked Oct 8, 2026
A good fit for
- Individuals considering major life financial decisions like buying a house, changing jobs, having children, or retiring early under UK tax and pension rules.
Know the limitations
- The software is built for modeling one specific financial decision at a time rather than creating a full financial plan.
- The projections and charts are illustrations under stated assumptions and not guarantees or promises of future outcomes.
What you can do
- Modeling the affordability and financial impact of buying or remortgaging a house under UK tax rules.
- Comparing salary versus dividend income paths for limited company owners to understand tax and pension implications.
Features
- Side-by-side comparison of different financial decision paths to see their impact on cash flow, tax, and retirement.
- Detailed UK tax and pension rules modeling including income tax, National Insurance, dividends, SDLT, student loans, childcare, and more with inspectable assumptions.
- Monte Carlo market path simulations and historical market backtesting to stress-test financial projections.
- Track My Progress feature to record actual financial outcomes versus modeled projections to keep plans aligned.
Integrations
- Includes mortgage, car benefit-in-kind, and salary/dividend calculators as quick tools alongside the main modeling engine.
Platforms & data export
- Web-based application accessible from any device with encrypted data storage and no bank connection required.
- Year-by-year cash flow charts and summaries organized by year, with detailed tax, retirement, property, and business result tabs available in premium plans.
THE COST FOR YOUR TEAM
Go beyond the starting price.
Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.
Known monthly subtotal
$0.00/month
1 of 1 tools could not be priced with these inputs, so this is not the full cost.
| Tool / plan | Monthly | Per year | What this assumes |
|---|---|---|---|
| No plans published in USD. Switch currency to see this tool's prices. | |||
A practical workflow
- Name the decision by entering your situation and the change you are considering, optionally using templates to start quickly.
- Run the what-if by comparing different decision paths side by side under the same UK tax and pension rules, adding multiple decisions on the same timeline.
- Inspect the evidence by reading a plain-language verdict and drilling into assumptions, tax, and cash flow details to audit the model.
Based on the sources below. Editorial review does not imply hands-on product testing.
Alternatives to explore
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