SIP vs Lump Sum: What Is the Difference?

A SIP invests a fixed amount every month. A lump sum invests everything at once. They suit different situations.

By Aman Jha · Updated 2026-10-27

The basic difference

A worked example

Assume a steady 12% a year (real returns change every year, so this only shows the arithmetic).

The lump sum looks bigger only because all the money started working on day one. The SIP money entered month by month. They are not like-for-like, so do not treat this as a "winner".

How to think about it

Test your own numbers in the SIP Calculator. To learn the formula, read how SIP returns are calculated.

This is general information, not investment advice.

Note: Results are estimates for learning and planning. They are not financial, tax or investment advice, and actual figures from your bank or lender may differ. See our disclaimer.

Frequently asked questions

Is SIP better than lump sum?

Neither is always better. A SIP suits regular income. A lump sum suits money you already have. Returns are not guaranteed in either case.

Can I do both?

Yes. Many people invest a lump sum when they have extra money and also run a monthly SIP.

Is the 12% return guaranteed?

No. It is an assumption for the calculation only.

Free tools mentioned in this guide