The basic idea
An emergency fund is liquid savings set aside specifically to cover unexpected expenses or a temporary loss of income - without needing to borrow again, usually at a worse rate, to cover the gap. It’s not an investment and it’s not meant to grow; its entire job is to be accessible immediately when something goes wrong.
Why a new loan makes this more important, not less
Taking on a new EMI increases your fixed monthly obligations. That’s true by definition - it’s the whole point of a loan. But it also means the consequence of a temporary income disruption is larger than it was before, since you now have a bigger fixed commitment to meet regardless of what else happens. An emergency fund sized for your life before the loan may no longer be sized correctly for your life with the loan added on top.
A common starting point
A widely used rule of thumb is three to six months of essential expenses - not income, expenses, since that’s what you’d actually need to cover if income stopped. Essential expenses generally means rent or EMI, utilities, groceries, insurance, and other non-discretionary costs - not your full lifestyle spending. Where in that three-to-six month range you land usually depends on how stable your income is: a salaried role at an established employer typically warrants less buffer than a commission-based or self-employed income, where six to twelve months is often more appropriate given less predictable cash flow.
The connection to loan strategy
This matters more than it might seem for a tool like ours. When you tell the Loan Strategy Analyzer how consistently you can make extra payments, the honest answer depends partly on whether you have a real buffer behind that consistency. "I can prepay an extra amount every month" looks very different in practice if a job loss six months from now would force you to stop - versus if you have a real cushion that lets you keep going through a rough patch. An adequate emergency fund is part of what makes a "very consistent" answer actually true, not just hopeful.