Why I keep a dedicated 'tax fund' — and the ₹40,000 habit that stopped my panic-selling

Sep 15, 2026

I keep a separate liquid stash only for upcoming tax bills. How I fund it, when I move money to my bank, and the one mistake that taught me to start earlier.

Written by: Devika Iyer

It was 11:30pm on a Sunday and I had exactly one sober thing to do: pay the self‑assessment tax I’d been postponing for two months. My bank app showed the funds. I opened the income‑tax portal, started the challan, and confidently hit UPI.

Payment failed.

A minute later I realised why. My current account balance was fine—but the bulk of my “liquid investments” were sitting in a money‑market fund that still showed as ‘processing’ for redemptions. T+1. The tax portal wanted money now. UPI block for the bank. NEFT cut‑off passed. My deadline was tomorrow.

Two frantic hours, two frantic calls, and a short‑term loan from a friend later, I paid the tax. I also learned the rule I’ve followed ever since.

Why a dedicated tax fund For two years I used one lump buffer for everything: emergencies, rent shocks, and taxes. It felt tidy. The problem: taxes have fixed due dates and exact amounts. Emergencies are vague. When both live in the same jar, the jar empties for groceries or an urgent AC repair and you’re suddenly forced to sell SIP units or borrow ahead of a tax deadline.

So I split them.

My ‘tax fund’ is a clearly labelled liquid buffer — not my emergency fund, not my travel money. It lives in a mix of instruments chosen for two things only: reliably available when I need it, and slightly better than a savings account.

How I run it (the exact routine I use)

1. Estimate, then overshoot. I run a simple quarterly estimate of tax liabilities. For salaried months it’s small; for months with freelancing income I add 30–40% as a conservative buffer. Practically: for an expected next‑quarter tax of ₹25,000, I keep ₹40,000 in the tax fund (≈ 150% of the estimate). That extra margin covers calculation mistakes, bank holds, or a UPI limit.

2. Where I park it. I use a liquid mutual fund that allows instant redemptions into my bank. For the last mile I keep ₹10–15k as actual bank balance. Why the split? Liquid funds usually redeem quickly (T+0/T+1 depending on the AMC and time). The bank balance handles same‑day payment windows and UPI. Together they let me avoid panic-selling equities.

3. Automation that respects reality. On every pay day I auto‑route a fixed amount to the tax fund via an automated transfer. For my freelance months I increase the transfer manually. I used to try to automate the whole thing inside the fund (SIP into a liquid fund). That works, but I still keep the small bank cushion as a safety valve.

4. Two‑step withdrawal before payment. When a tax payment is coming up, I move the required amount from the liquid fund to my current account at least 48 hours before the due date. That’s my non‑negotiable. It sounds slow. It saved me from redemption cycles and bank holds more than once.

An honest failure: the time I trusted ‘instant’ redemptions Liquid funds advertise “instant” redemptions. They often are. But once, during a weekday evening, my fund’s redemption timed out and became T+1 because the AMC had an internal processing window. I’d left moving money to the last minute, assuming ‘instant’ would mean instant. Lesson: don’t assume. If your tax due date is firm, treat the fund as T+1 and move money earlier.

Tradeoffs I accepted

• Returns vs absolute liquidity: A savings account gives instant transfers but near‑zero returns. Liquid funds give a bit more yield but can have processing quirks. I opted for slightly better returns with a process to handle the tail risk.
• Complexity vs mental load: I split money into an extra pot. That adds bookkeeping (I track the fund in a simple spreadsheet). But mentally it’s easier: taxes are no longer an emergency.
• Automation limits: Some banks and AMCs don’t support instant sweep or truly instant local redemptions. I accept the manual 48‑hour transfer before a due date.

Practical details for an Indian setup

• Keep the last‑mile cash in your bank: NEFT/RTGS/UPI windows, bank blocks, and salary delays happen. ₹10–15k in current account is my buffer for same‑day needs.
• Know your AMC’s cut‑offs: Redemption requests before 1:00pm often clear same day. After that, they’re T+1. Check the fund factsheet.
• For very urgent payments, use RTGS/NEFT with bank balance. Don’t rely on a fund to magically clear after midnight.
• If you’re a freelancer using Zerodha for mutual funds (or any platform), check the holding pattern: some platforms take extra time to move redeemed money to your linked bank.

When this setup still trips me up I underestimated a sudden tax event once: a contract’s TDS shortfall meant an extra ₹22,000 tax the month my rent and phone bill were also due. My tax fund covered 80% but not the extra. I had to delay a non‑urgent purchase and borrow the rest from a friend. It taught me to keep the 150% rule and to review my tax estimate when my income profile changes — not once a year, but quarterly.

The takeaway I actually use Treat taxes like a bill, not a shock. Keep a labelled tax fund, fund it automatically, but move money to the bank with time to spare. In practice: estimate, keep 150% of the next expected bill, and shift funds 48 hours before due. It costs a tiny bit in effort and gives back peace of mind when the income tax portal decides to be fussy at 11:30pm on a Sunday.