Upgrade
NestBoost Premium is your full planning toolkit, not just a mortgage calculator. Build smarter decisions across mortgage strategy, ISA planning, and savings growth in one place.
Upgrade to unlock deeper comparisons, faster scenario workflows, and export-ready insights so you can plan with confidence and act sooner.
Premium features are currently available to all registered users.
Free
Great for everyday mortgage and ISA planning essentials.
Free
Premium (Founding)
Best valueFor users who want deeper mortgage + ISA analysis and faster planning workflows.
£19.99/year
Standard £44.99Effective monthly cost: £1.67
Clearer mortgage decisions
Compare scenarios faster with richer chart views and better visibility across the mortgage term.
Deeper ISA insight
Add CPI/CPIH-linked inflation assumptions, scenario stress tests, and Monte Carlo-driven confidence ranges.
Save time on repeat planning
Keep profile defaults, manage saved scenarios, and return to work with fewer setup steps.
Free vs Premium comparison
| Feature | Free | Premium |
|---|---|---|
| Mortgage Calculator | ||
Core mortgage planner + standard chart Baseline repayment planning with core outputs and standard charting. | Included | Included |
Milestone insights (interest paid + LTV) Track key checkpoints across your mortgage term and progress bands. | Basic | Enhanced |
Premium chart mode + advanced chart controls Richer mortgage chart views, overlays, and chart-control depth. | Preview only | Full controls |
LTV Target Planning card Plan strategy toward stronger LTV bands with clearer timing targets. | Preview only | Full controls |
Advanced Rate Insights + Stamp Duty Break-even, rate-shock, and UK stamp duty planning by region and buyer type. | Preview only | Full region + buyer controls |
Mortgage Manager Save, load, rename, archive, restore, and delete mortgage scenarios. | Not included | Full controls |
Premium reports (PDF + CSV) Export planning outputs for review, sharing, and side-by-side comparison. | Not included | Included |
| ISA Calculator | ||
Core ISA planner + standard chart Projection, contributions, growth, checkpoints, and allowance-aware outputs. | Included | Included |
Contribution cadence + allowance checks Monthly/yearly contribution modes with allowance-capped inputs and usage tracking. | Included | Included |
Additional Settings (inflation controls) CPI/CPIH benchmark selection plus short-term/long-term inflation assumptions. | Preview only | Full controls |
Inflation Lab (scenario + sensitivity) Compare base/higher/stress inflation outcomes and sensitivity matrix behavior. | Preview only | Full controls |
Inflation Lab Pro (Monte Carlo) Distribution outcomes with volatility/correlation controls and confidence metrics. | Preview only | Full controls |
| Shared Platform | ||
Basic forms for signed-out users Quick mortgage and ISA planning entry points without full signed-in workflows. | Included | Included |
Profile defaults and workflow preferences Save planning defaults and scenario load behavior to reduce repeat setup. | Limited | Full controls |
Priority premium roadmap access Early access to new premium planning capabilities as they launch. | Not included | Included |
Roadmap: upcoming capabilities
This roadmap is active and may adjust as features are validated in production.
Mortgage
Report exports
In progressProduction-grade PDF and CSV export outputs for clearer external review workflows.
Scenario autosave
PlannedAutosave draft and restore your last-opened mortgage scenario on return.
Multi-profile comparison
PlannedCompare 2 to 4 saved mortgage profiles side-by-side to assess payment, term, and total-cost differences faster.
ISA
High-accuracy Monte Carlo
In progress10,000-run deep analysis mode for stronger confidence on long-horizon outcomes.
Adaptive run tiers
PlannedLive mode for responsiveness plus higher-accuracy settle and on-demand analysis tiers.
Inflation Lab consolidation
PlannedReview and simplify V1/V2 inflation experiences to keep insights clear and actionable.
Platform
Premium checkout
In progressMove from waitlist to full subscription checkout and entitlement activation.
Savings compounding calculator
PlannedAdd a dedicated long-term savings growth calculator to the NestBoost suite.
Financial guides + articles
PlannedExpand card-linked educational content to support decision quality and user confidence.
Membership policy
You can stay on the free plan for as long as you want, and upgrade only when premium features become useful for your planning.
If you cancel, premium remains active through your paid period, then your account returns to free access.
