Retirement Savings Calculator

📖 Tool Introduction

Retirement planning comes down to three questions: how much you need on the day, how much to save each month from now, and how long what you already have would last.

This calculator works in inflation-adjusted terms. It subtracts your expected pension from your planned spending to find the gap you must fund, inflates that forward to your retirement year,

then discounts it over your expected retirement at the real rate of return, net of inflation, to give the lump sum needed and the monthly saving that gets you there.

Every figure you type stays inside this browser tab. The arithmetic runs as plain JavaScript on your own device, so nothing is uploaded to a server, nothing survives after you close the page, and there is no account to create or sign in to. You can enter real numbers without worrying about them leaving your machine.

What comes out is a mathematical projection built on the assumptions you supply, and the assumptions are the part worth checking. Real outcomes turn on details no calculator can see: the exact wording of a loan contract, the policy in force in your city this year, the way your own body responds. Use these numbers to orient yourself and to compare one option against another, then confirm anything that carries real consequences against an official document or a professional who can look at your actual circumstances rather than a generic formula. Where a result feeds into a decision that costs money or affects your health, treat it as the opening of a conversation with someone who can see the whole picture rather than as the answer in itself.

The inputs here are deliberately plain: no file to upload, no network call, no queue to wait in. That keeps the tool fast and private, and it also means no record exists anywhere of what you calculated, so nothing you try here can come back to you later.

✨ Key Features

• Inflates the real spending gap forward to the retirement year
• Subtracts the expected pension so you only fund what you must
• Discounts at the real return to give the lump sum required
• Solves for the monthly saving, with current savings compounded forward
• Year-by-year accumulation table to track progress against the goal
• Recalculates the moment you change any figure, with no waiting and no separate submit step

🚀 How to Use

1. Enter your current age and planned retirement age
2. Enter expected monthly spending in retirement and your expected monthly pension
3. Fill in the inflation rate, investment return and expected years in retirement
4. Enter current savings, or zero if none
5. The result panel shows the amount needed, monthly saving and shortfall

⚠️ Things to Note

• Discounted at the real return: The projection discounts at the real return net of inflation, which is what preserves purchasing power. Using nominal return would materially understate the amount needed
• Major costs are excluded: Major illness, long-term care and property liquidation are excluded, so the real requirement may be higher
• Pension depends on contributions: Pension depends on contribution years and base, so this uses the value you enter and is planning guidance only
• Computed locally in your browser: Every figure is worked out inside your own browser and nothing is sent to a server. The values disappear when you close the page, so you can safely enter real numbers
• Indicative results only: What you see here is a mathematical projection. For contracts, tax filings or medical decisions, rely on the official documents issued by the relevant authority rather than on this tool