ESOP vs RSU

ESOP stands for Employee Stock Option Plan. The important word is option.

When a company grants you ESOPs, it isn't giving you shares. It's giving you the right to buy shares in the future at a price fixed today, called the exercise price or strike price. If the company does well and its shares become worth much more than your exercise price, that gap is your gain. If the shares never become worth more than the exercise price, your options are worth nothing.

ESOPs come with a vesting schedule, which decides when you earn the right to use them. A common pattern is four years with a one-year cliff: nothing vests in your first year, then a quarter vests at the one-year mark, and the rest vests in instalments over the next three years. Leave before the cliff, and you walk away with nothing.

Once options vest, you can exercise them, which means paying the exercise price to turn them into real shares. And then comes the hard part at most startups: actually selling those shares. Until the company is acquired, lists on a stock exchange or runs a buyback, there's often nobody to sell to.

That's why ESOPs are so common at startups. They let a young company offer you a meaningful stake in its future without spending cash it doesn't have.

RSU stands for Restricted Stock Unit. Think of it as a promise: the company will give you a set number of shares, free, once certain conditions are met. Usually that condition is simply staying with the company until the RSUs vest.

There's no exercise price and nothing to buy. When an RSU vests, the shares land in your account, and they're worth whatever the share price is that day. If the share price falls, your RSUs are worth less, but unless the company collapses, they're rarely worth nothing.

RSUs are most common at large companies whose shares are already listed and easy to sell, which is why you'll mostly see them in offers from multinationals and big listed firms. In India, many people receive RSUs in the shares of a foreign parent company, often listed in the US.

Here's how the two compare side by side.

If you only remember one thing, make it this: RSUs are closer to cash; ESOPs are closer to a bet. An RSU is a share you'll own. An ESOP is a chance to buy a share that might be worth a lot more later, or might not.

Let's go back to those two offers and put some numbers on them. These are illustrative, but the mechanics are real.

Offer A: 4,000 ESOPs at a startup

Your options vest over four years with a one-year cliff, so 1,000 vest each year. The exercise price is ₹10 a share.

Fast forward four years. The startup has grown, and its latest valuation puts each share at ₹500. On paper, your 4,000 vested options look worth about ₹19.6 lakh: that's (₹500 minus ₹10) × 4,000.

Now say you want to exercise them. Two things happen:

• You pay the exercise price: 4,000 × ₹10, which is ₹40,000.
• The ₹19.6 lakh gain is treated as part of your salary for that year and taxed at your slab rate. If you're in the 30% bracket, that's roughly ₹6 lakh in tax once cess is added, before any surcharge.

And here's the catch. Even after paying all that, you probably still can't sell the shares, because the company is not listed. You've paid real money for something you can't yet turn into cash. Some startups qualify for a tax deferral that helps with exactly this, which we'll cover below, but most don't.

If the startup later sells or lists at ₹2,000 a share, your 4,000 shares could be worth ₹80 lakh. If it struggles, they could end up worth far less than you paid in tax.

Offer B: RSUs at a multinational

You're granted 80 RSUs in the company's US-listed parent, vesting 20 a year over four years. Say the share price works out to about ₹25,000 when each batch vests.

Each year, 20 shares land in your account, worth about ₹5 lakh. That ₹5 lakh is taxed as salary in the year it vests, whether or not you sell. The difference is that you can sell, often straight away, so many people sell some shares to cover the tax. Employers frequently handle this for you by withholding shares or deducting tax through payroll.

Your yearly ₹5 lakh will move up and down with the share price, but it's very unlikely to vanish.

So which is better?

Neither, in general. Offer B is steadier and easier to plan around. Offer A has more upside and much more risk. The right one depends on how much you believe in the startup, how comfortable you are with uncertainty and whether you'd have the cash to exercise and pay tax when the time comes.

Both ESOPs and RSUs are taxed twice in India: once when the shares become yours, and again when you sell them. The details live in ESOP taxation in India, but here's the shape of it.

For ESOPs, this happens when you exercise. The difference between the share's fair market value on that day and your exercise price is treated as a perquisite, which is part of your salary, and taxed at your slab rate. Your employer deducts tax at source on it.

For RSUs, this happens when they vest. The full market value of the shares on vesting day counts as salary, because you didn't pay anything for them.

The key point for both: you owe tax before you've sold anything.

Some startups qualify for a special rule that lets employees postpone the tax on exercising ESOPs. To qualify, a startup needs DPIIT recognition and an additional certificate from the government's Inter-Ministerial Board, and only a small fraction of DPIIT-recognised startups have it.

If yours does, the tax is deferred until the earliest of three moments: when you sell the shares, when you leave the company, or when a set window of several years runs out. It's a postponement, not an exemption. Ask your employer directly whether its ESOPs qualify, and don't assume they do.

When you sell, the gain above the value already taxed at stage one is a capital gain. How it's taxed depends on what kind of share you hold and how long you've held it.

Surcharge and cess apply on top of these rates. The holding period starts from the day you exercise an ESOP or the day an RSU vests, not the day you were granted it.

That last row catches a lot of people out. Even though US shares trade on a big stock exchange, India treats foreign shares like unlisted ones for capital gains. So you need to hold them for 24 months, not 12, to get the long-term rate.

If you're an Indian resident holding RSUs in a foreign company, you must disclose them every year in Schedule FA of your income tax return, for as long as you hold them, even in years when you didn't sell anything. Schedule FA runs on the calendar year, not the Indian financial year, which trips people up. It's a disclosure, not an extra tax, but missing it can lead to penalties.

A small note for the curious: the Income-tax Act, 2025 came into force on 1 April 2026 and renumbered most of the sections you'll see quoted online. The two-stage treatment of ESOPs and RSUs works the same way it did before.

This is where the two differ more than people expect.

With RSUs, it's fairly simple. Shares that have already vested are yours to keep. Anything unvested is usually forfeited the day you leave.

With ESOPs, it's trickier. Unvested options are normally forfeited too. Vested options, though, usually have to be exercised within a set window after you leave, and that window varies a lot from company to company. Some give you a few months; others give you years. If you don't exercise in time, the options lapse.

Exercising means paying the exercise price, and possibly the tax on the gain, for shares you may not be able to sell for a long time. So when you leave a startup, you could be making a real financial decision with very little information. Knowing your company's exit window before you resign is one of the most useful things you can do.

And when can you actually turn startup shares into cash? Usually through an acquisition, a public listing or a buyback, where the company or its investors buy shares back from employees.

Whether it's ESOPs or RSUs, these questions will tell you far more than the headline number.

How many options or units, and what percentage of the company is that? "4,000 ESOPs" means nothing on its own. 4,000 out of 10 lakh shares is very different from 4,000 out of 10 crore.

What's the exercise price, and what was the latest valuation per share? The gap between the two is your on-paper gain today.

What's the vesting schedule, and is there a cliff?

How long do I have to exercise if I leave? For ESOPs, this matters enormously.

Has the company ever run a buyback or let employees sell shares? A track record of giving employees a way to cash out is a good sign.

Does the startup qualify for the ESOP tax deferral?

For RSUs, how is tax handled at vesting? Will the company withhold shares or deduct tax through payroll, or will you need to arrange it yourself?

Ask these politely and in writing. Good companies expect them and answer clearly.