Financial Independence & Retirement Calculator

Plan your path to financial independence with clear visuals and actionable metrics.

How to Use This Calculator

1. Enter Your Details: Fill in your current age, investment balances, expected returns, and annual spending in the three input sections (Timing, Main Pot, and Pension Pot).

2. Main Pot: This represents your accessible investments that you can withdraw from at any time (e.g., ISAs, general investment accounts).

3. Pension Pot: This represents retirement accounts that are locked until a specific age (e.g., private pensions, SIPPs).

4. Variable Rates (Optional): Enable the "Use Variable Rates Over Time" toggle if you want to model changing conditions. For example, you might expect high returns now (30%) that decline to more conservative levels (15%) over 10 years, or inflation that starts at 3% but could rise to 8%. Set your starting rate, ending rate, and how many years the transition takes. The calculator will gradually interpolate between these values.

5. Mortgage/Debt (Optional): Enable the "Include Mortgage/Debt" toggle to track your mortgage and see your true net worth over time. You can model either repayment mortgages (where the balance decreases) or interest-only mortgages. The calculator will show both your gross assets and net worth (assets minus debt), helping you understand when you'll be debt-free and how mortgage payments impact your retirement plans.

6. Review Metrics: The calculator shows key metrics including your earliest sustainable retirement age, depletion year, and spending budgets. Green indicates good, amber indicates caution, and red indicates potential issues.

7. Pre/Post-Pension Budgets: These show what you could spend if you retired today - the first shows spending from your accessible pot until pension unlocks, the second shows spending after pension access using both pots.

Timing

Starting Year

Current Age

Life Expectancy

🎯Retirement Start Year (Your Goal)

Retirement age: 50

Main Pot

Start Investment (£)

Return (real, %)

Yearly Contributions (£)

Annual Outgoings (£)

Inflation (% per year)

Pension Pot

Pension Balance (£)

Pension Return (real, %)

Pension Contributions (£)

Pension Access Age

Pension access year: 2042

Use Variable Rates Over Time (Optional)

Enable this to model rates that change over time (e.g., declining returns or rising inflation)

Include Mortgage/Debt (Optional)

Track your mortgage to see your true net worth and when you'll be debt-free

Include State Pension (Optional)

Add state pension income to reduce required withdrawals from your pots (UK: ~£11k/year at age 67)

Earliest Sustainable Retirement Age

You can retire at age 88 without running out of money

Financial Independence Number

£1,200,000

Depletion Year

2036

(Age 51)

Balance at Life Expectancy

£0

Pot at Retirement

£25,815

Sustainable Spend @ Retirement

£215

Target vs spend in 2035

Sustainable Spend @ Pension Access

£0

Once pension is unlocked (2042)

Yearly Budget Until Pension (If Retired Today)

£744

Max annual spending from main pot only, from today until pension unlocks at age 57

Yearly Budget After Pension (If Retired Today)

£3,870

Max annual spending from both pots, from age 57 to life expectancy (assuming pre-pension spending above)

Balance Over Time

📊Recommendations

⚠️ Your target retirement age (50) is 38 years too early. Consider retiring at 88 or increasing contributions by £0/year.

🚨 Your funds will deplete in 1 years (age 51). Reduce spending by £12,000/year or increase your pot by £600,000.

💡 Consider enabling state pension (£11k/year at 67) to reduce required withdrawals by ~£11,000/year.

Projection Table

Year	Age	Main (£)	Pension (£)	Total (£)	Spending	Runway (yrs)	Funding Gap
2025	40	£10,500	£52,500	£63,000	—	—	No
2026	41	£11,025	£55,125	£66,150	—	—	No
2027	42	£11,576	£57,881	£69,458	—	—	No
2028	43	£12,155	£60,775	£72,930	—	—	No
2029	44	£12,763	£63,814	£76,577	—	—	No
2030	45	£13,401	£67,005	£80,406	—	—	No
2031	46	£14,071	£70,355	£84,426	—	—	No
2032	47	£14,775	£73,873	£88,647	—	—	No
2033	48	£15,513	£77,566	£93,080	—	—	No
2034	49	£16,289	£81,445	£97,734	—	—	No
2035	50	£4,303	£21,513	£25,815	£76,805	0.3	No
2036	51	£0	£0	£0	£78,725	—	Yes
2037	52	£0	£0	£0	£80,693	—	Yes
2038	53	£0	£0	£0	£82,711	—	Yes
2039	54	£0	£0	£0	£84,778	—	Yes
2040	55	£0	£0	£0	£86,898	—	Yes
2041	56	£0	£0	£0	£89,070	—	Yes
2042	57	£0	£0	£0	£91,297	—	Yes
2043	58	£0	£0	£0	£93,580	—	Yes
2044	59	£0	£0	£0	£95,919	—	Yes
2045	60	£0	£0	£0	£98,317	—	Yes
2046	61	£0	£0	£0	£100,775	—	Yes
2047	62	£0	£0	£0	£103,294	—	Yes
2048	63	£0	£0	£0	£105,877	—	Yes
2049	64	£0	£0	£0	£108,524	—	Yes
2050	65	£0	£0	£0	£111,237	—	Yes
2051	66	£0	£0	£0	£114,018	—	Yes
2052	67	£0	£0	£0	£116,868	—	Yes
2053	68	£0	£0	£0	£119,790	—	Yes
2054	69	£0	£0	£0	£122,784	—	Yes
2055	70	£0	£0	£0	£125,854	—	Yes
2056	71	£0	£0	£0	£129,000	—	Yes
2057	72	£0	£0	£0	£132,225	—	Yes
2058	73	£0	£0	£0	£135,531	—	Yes
2059	74	£0	£0	£0	£138,919	—	Yes
2060	75	£0	£0	£0	£142,392	—	Yes
2061	76	£0	£0	£0	£145,952	—	Yes
2062	77	£0	£0	£0	£149,601	—	Yes
2063	78	£0	£0	£0	£153,341	—	Yes
2064	79	£0	£0	£0	£157,174	—	Yes
2065	80	£0	£0	£0	£161,104	—	Yes
2066	81	£0	£0	£0	£165,131	—	Yes
2067	82	£0	£0	£0	£169,260	—	Yes
2068	83	£0	£0	£0	£173,491	—	Yes
2069	84	£0	£0	£0	£177,828	—	Yes
2070	85	£0	£0	£0	£182,274	—	Yes
2071	86	£0	£0	£0	£186,831	—	Yes
2072	87	£0	£0	£0	£191,502	—	Yes
2073	88	£0	£0	£0	£196,289	—	Yes
2074	89	£0	£0	£0	£201,197	—	Yes
2075	90	£0	£0	£0	£206,227	—	Yes