Platform features
Everything you need to plan with confidence
1,000 Monte Carlo simulations
Each portfolio runs through 1,000 simulated futures built on long-run estimates of asset class returns, volatility, and correlations. See a range of outcomes, not a single guess.
Stress testing
Six crisis scenarios — 2008 financial crisis, COVID-19 crash, 1970s stagflation, dot-com bust, Black Monday, rising-rate shock — applied to what you hold, with the effect on your goals.
Allocation explorer
Once you've set a goal, Slate compares simple mixes from 0% to 100% equities and shows how each would change your chance of meeting it. It's a comparison to help you think, not a recommendation.
CSV import
Upload a holdings or valuation CSV exported from your broker. Slate picks out each holding and its value and suggests an asset class for you to check before anything is saved.
Pension and gilt ladder calculators
Project a pension pot from contributions and growth, or size a gilt ladder to your planned spending year by year. Free to use without an account.
Portfolio dashboard
See your portfolio in one view — value, asset allocation, expected return, volatility, the chance of meeting your goals, and your worst stress scenario.
Goals with real numbers
Plan for retirement spending, a house deposit, or an inheritance. Each goal gets its own probability, in today's money, so you can see which ones are at risk.
Privacy by design
No broker connections, no account numbers, no money movement. Your data is encrypted and UK-hosted. Delete everything anytime.
Our approach
Transparent methodology, published assumptions.
Slate's projections use long-run estimates for each asset class — returns, volatility, and cross-asset correlations. Every assumption is documented. Every limitation is disclosed. No black boxes.
Return assumptions
Long-run estimates
Inflation model
2.5% a year
Simulated paths
1,000 per plan