Does daily compounding make a big difference?

The difference between daily and annual compounding is relatively small, roughly 0.1–0.2% per year at typical rates. Over 20+ years it adds up, but the rate of return and contribution amount matter far more.

Do stocks compound daily?

Stock market returns don't compound on a fixed schedule like savings accounts. Share prices change continuously during trading hours, and dividends compound when reinvested. The daily compounding option here gives a close approximation of continuous market growth.

What is the effective annual rate (EAR)?

EAR is the actual annual return after accounting for compounding frequency. A 5% nominal rate compounded daily has an EAR of 5.13%. This calculator automatically accounts for your chosen compounding frequency.

Should I account for inflation?

Yes. Inflation erodes purchasing power over time. Use the Advanced Settings to add an inflation rate (2–3% is typical for the UK) to see your results in today's money. This gives a more realistic picture of future wealth.

What's the best strategy for compound growth?

Start early, contribute consistently, and let time do the work. Even small amounts grow significantly over decades. Increasing your contributions by a small percentage each year (use Advanced Settings) can dramatically boost your final balance.

CompoundWise

Turn £200/month into £109,333

Free UK calculator · No signup · Based on ISA investing

By CompoundWise Team·Updated April 2026

Starting amount

£0£20k£200k

Monthly contribution

£0£1k£5k

Expected annual return

Time horizon

yrs

Invest £200/month for 20 years at 5%

£50,463

earned in interest alone

Total value

£108,463

You put in

£58,000

Your money47% from compounding

To reach £108,463, most UK investors use a Stocks & Shares ISA

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Keeping this in a savings account? You'd have ~£12,918 less

Compared to investing at 5% vs a 4% cash savings account

Growth Over Time

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Quick Scenarios

Compounding frequency

Inflation rate

Yearly contribution increase

Inflation adjusts your final balance to show purchasing power in today's money. Contribution increase grows your monthly payment each year.

Your Personalised Insights

Your money earns ~£7/day in interest. That's £50,463 earned while you sleep.
Saving just £50 more per month would add £20,413 to your final balance. That's £12,000 invested for £20,413 extra.
5 more years would add £43,909, nearly 40% more, showing how powerful time is.
Starting 5 years earlier would add £34,314 to your final balance. Every year you wait costs real money.Start investing now →
Consistency beats timing, investing £200/month for 20 years matters more than picking the perfect moment to start.
At your current plan, you reach £100k in 19 years. That's a real milestone, and it compounds from there.Start building towards it →
56% of your total wealth is built in the final 10 years. Patience is everything.

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Try These Scenarios

Compound Interest Over 10 Years: What to ExpectSee how compound interest works over a 10-year period. Realistic projections for medium-term savings and investment goals.Compound Interest Over 20 Years: Growth ProjectionCalculate compound interest growth over 20 years. See how two decades of consistent investing transforms your savings.Invest £200 Per Month: Compound Growth ProjectionCalculate how £200 monthly contributions grow with compound interest over 10, 20, or 30 years. Free visual calculator.

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What If You Invest £50 Per Month?See how even £50 per month compounds into real wealth over time. Free calculator with visual charts and year-by-year breakdown.What If You Invest £100 Per Month?See how investing £100 per month grows over time with compound interest. Calculate your projected returns with our free tool.Invest £200 Per Month: Compound Growth ProjectionCalculate how £200 monthly contributions grow with compound interest over 10, 20, or 30 years. Free visual calculator.Invest £300 Per Month: How Much Will It Grow?See how £300 monthly investments compound over 10, 20, or 30 years. Visual calculator with insights and year-by-year projections.Invest £500 Per Month: Long-Term Growth CalculatorSee how £500 monthly investments compound over time. Visualise your potential returns with charts and year-by-year breakdown.Invest £750 Per Month: Wealth Projection CalculatorCalculate how £750 per month compounds over time. See projected balances, interest earned, and milestone years.Invest £1,000 Per Month: Wealth Building CalculatorCalculate how investing £1,000 per month compounds over time. See projected balances, interest earned, and growth charts.Invest £1,500 Per Month: High-Earner Growth CalculatorSee how investing £1,500 monthly builds wealth over time. Projections for 10, 20, and 30-year horizons with compound interest.Invest £2,000 Per Month: Accelerated Wealth CalculatorCalculate how £2,000 monthly investments compound into serious wealth. See projections with charts, milestones, and breakdowns.

By the CompoundWise Team · Updated April 2026

UK-based financial education · Not financial advice

How daily compound interest works

With daily compounding, your balance earns interest every day based on that day's balance, including all previously earned interest. A £10,000 deposit at 5% annual interest compounded daily earns slightly more than the same rate compounded monthly or annually, because each day's interest starts earning its own interest sooner. The difference is subtle but grows over longer time periods and larger balances.

Daily vs monthly vs annual compounding

The effective annual rate (EAR) increases with compounding frequency. At 5% nominal: annual compounding gives 5.00% EAR, monthly gives 5.12%, and daily gives 5.13%. On £10,000 over 20 years, daily compounding adds approximately £150 more than annual compounding. The difference is real but modest. What matters far more is the rate of return itself and how consistently you contribute.

Which UK accounts compound daily?

Most UK savings accounts compound daily or calculate interest daily and pay it monthly. High-interest current accounts, NS&I products, and many cash ISAs use daily interest calculation. For stock market investments, compounding occurs through market returns rather than fixed intervals, making the daily vs monthly distinction less relevant for equity investors.

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