Free
Great for quick mortgage checks and essential estimates.
Free
- Core mortgage calculator and repayment estimates
- Standard charts and key mortgage insights
- Essential planning tools for quick decisions
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.
Free
Great for quick mortgage checks and essential estimates.
Free
Premium (Founding)
Best valueFor homeowners and buyers who want smarter, more confident planning.
£19.99/year
Effective monthly cost: £1.67
Clearer decisions
Compare scenarios faster with richer chart views and better visibility across the mortgage term.
Better overpayment planning
Set practical overpayment strategies and understand how they affect interest, term length, and LTV milestones.
Save time on repeat planning
Keep your defaults and planning setup ready whenever you come back.
Free vs Premium comparison
| Feature | Free | Premium |
|---|---|---|
| Core Planning | ||
Core mortgage calculator Payment and repayment estimates for baseline planning. | Included | Included |
Standard charting Core trend visualisation for mortgage balance and costs. | Included | Included |
Milestone insights card (interest + LTV) Shows key progress checkpoints across your mortgage term. | Basic | Enhanced |
LTV Target Planning card Plan when you can reach better LTV bands. | Limited | Full controls |
| Advanced Analysis | ||
Premium chart modes and chart controls Switch and fine-tune richer chart views for comparison. | Not included | Full controls |
Chart fill overlays and dynamic resize Improve readability when comparing mortgage paths. | Not included | Full controls |
Advanced Rate Insights: break-even analysis See when higher payments could offset longer-term costs. | Not included | Included |
Advanced Rate Insights: rate shock scenarios Stress test affordability against potential rate rises. | Not included | Included |
| Personalization & Settings | ||
Additional settings: currency and forecast defaults Control preferred display and default forecast behavior. | Fixed defaults | Full controls |
Additional settings: adjustable overpayment cap % Set planning assumptions to match your overpayment strategy. | Default cap only | Full controls |
Profile defaults (save personal planning setup) Start from your preferred setup every time you return. | Not included | Included |
Scenario load behaviour personalisation Choose auto-load on select or manual load flow. | Not included | Auto-load or manual |
| Scenario Management & Outputs | ||
Mortgage Manager Save, load, rename, archive, restore, and delete scenarios. | Not included | Full controls |
Premium reports card (PDF + CSV) Export planning outputs for sharing and external review. | Not included | Included |
| Stamp Duty Planning | ||
Advanced Rate Insights: stamp duty planning card Estimate costs directly inside your planning workflow. | Basic | Full controls |
UK stamp duty planning options Tune calculations by region and buyer type. | Basic | Full region + buyer controls |
| Roadmap Access | ||
Priority access to new premium planning features Get new paid planning capabilities first. | Not included | Included |
Upcoming ISA calculator access Early access as ISA planning tools are released. | Not included | Included |
Upcoming savings compounding calculator access Early access to long-term savings growth calculators. | Not included | Included |
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.