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Calculate tax-free wealth compounding under the UK's £20,000 annual ISA allowance and compare tax saved vs unwrapped accounts.
Accumulated across 20 years with £0 UK Capital Gains or Dividend Tax payable.
Calculations follow official federal and central bank guidelines (IRS, RBI), statutory tax provisions, and standardized actuarial compounding.
Why our math is exact vs other portals →Detailed year-wise principal vs interest timeline
| Period | Invested Amount | Gains / Interest | Total Portfolio Value |
|---|---|---|---|
| Year 1 | $8,000 | $405 | $6,000 |
| Year 2 | $14,000 | $1,307 | $6,000 |
| Year 3 | $20,000 | $2,744 | $6,000 |
| Year 4 | $26,000 | $4,759 | $6,000 |
| Year 5 | $32,000 | $7,397 | $6,000 |
The UK ISA Calculator (Stocks & Shares vs Cash) is built to eliminate financial ambiguity by applying exact Indian financial mathematics rather than generic, oversimplified online estimates.
Whether evaluating interest liability on bank credit, calculating compounding acceleration on systematic investments, or forecasting net post-tax maturity values, accurate forecasting ensures you never misjudge your cash flow or long-term corpus.
Under UK tax law, 100% of capital gains, interest, and dividends inside an ISA are completely exempt from HMRC taxation.
Flat monthly or annual compounding estimates
Official RBI quarterly compounding [A = P(1+r/400)^4t] for bank FDs and sovereign 15-year statutory PPF rules.
In India, retail lending follows RBI guidelines on reducing balance compounding and External Benchmark Linked Lending Rates (EBLR/RLLR). Fixed deposits follow RBI quarterly compounding mandates, while mutual fund equity investments adhere to SEBI NAV timing and post-Budget 2024 capital gains tax provisions (12.5% LTCG over ₹1.25L).
Contributing £1,000/month (£12,000/year) into a low-cost global equity index fund yielding 8% p.a. over 20 years for a higher-rate taxpayer.
Your total contributions of £245,000 compound into £612,416. Inside the ISA, 100% of this gain is tax-free, saving approximately £73,483 in HMRC capital gains and dividend taxes compared to an unwrapped general account.
Benchmark guaranteed returns, taxation rules, and sovereign safety across India's premier savings instruments.
| Scheme Name | Current Interest Rate | Tenure / Lock-in | Tax Treatment | Safety Guarantee |
|---|---|---|---|---|
| Bank Fixed Deposit (FD) | 6.80% - 7.50% | 7 days to 10 years | Interest fully taxable at slab rate | DICGC Insured up to ₹5 Lakh |
| Public Provident Fund (PPF) | 7.10% (Tax Free) | 15 years lock-in | Exempt-Exempt-Exempt (EEE Status) | Sovereign 100% Guaranteed |
| Employees' Provident Fund (EPF) | 8.25% | Until retirement | Tax-free up to ₹2.5L employee contrib | Sovereign EPFO Managed |
| National Pension Scheme (NPS) | 9.5% - 11.5% (Market) | Up to age 60 | Extra ₹50k deduction under 80CCD(1B) | PFRDA Regulated |
The UK statutory annual ISA allowance is £20,000 across all adult ISAs (Cash, Stocks & Shares, Innovative Finance, and Lifetime ISA).
Calculate future wealth generated through monthly Systematic Investment Plans in mutual funds.
Calculate compound interest with annual, semi-annual, quarterly, or monthly compounding.
Calculate maturity amount and quarterly compound interest on Bank Fixed Deposits.
Compare safety, returns, liquidity, and tax treatment across Public Provident Fund (7.1%), National Pension System (10%), and Diversified Mutual Funds (12-14%).
Understand why Indian banks quote interest on a quarterly compounding basis under RBI guidelines, and how cumulative FDs yield higher annual returns.
Deepen your financial planning across interconnected tools. Every calculator within this cluster shares statutory logic and standardized Indian financial formulas.