You have a strong offer. The role is a step up, the team is compelling, and the base salary looks competitive. Then you open your equity portal: leaving next month means forfeiting a large vest, perhaps with another scheduled a quarter later. Suddenly the new offer has a gap that its headline total compensation never showed.

This is a common senior-engineer decision with unusually concrete stakes. In Levels.fyi’s 2025 report, U.S. software engineer total compensation data included hundreds of thousands of submissions, and equity remained a major component of reported packages. Those figures are useful market context, not a guarantee of what any individual’s shares will be worth. The goal is to quantify what you can document, explain uncertainty honestly, and ask the new employer to bridge the transition with terms you can evaluate.

This guide is for U.S.-based employees receiving public-company RSUs or private-company options/RSUs. It is negotiation guidance, not tax or legal advice. Equity plans, offer letters, tax treatment, and state rules vary; read the governing documents and get qualified advice when the amount or clause warrants it.

The hidden cost of changing jobs

A compensation comparison that ignores unvested awards can make a move look better than it is during the first year. Conversely, treating every unvested dollar as cash you already own can inflate the cost of leaving. Neither shortcut helps a recruiter make a case for an exception.

Public-company RSUs are generally promises to deliver shares or cash later, subject to the award terms. The IRS explains that RSUs typically are not taxed at grant; income is generally recognized when the units vest and settle under the applicable arrangement. An award is not the same as vested shares sitting in your account. Your plan agreement specifies what happens when employment ends. Public filings show how ordinary it is for unvested awards to be forfeited at termination: examples in SEC-filed RSU terms, Match Group’s award terms, and other issuer filings make the point: read your own grant paperwork, because plan rules differ.

Treat the transition as a dated cash-flow problemList what you lose on your actual departure date, what the new company can deliver by date, and which portions remain contingent. A clear timeline turns “I’m leaving money behind” into a negotiable, auditable request.

Build a verified forfeiture inventory

Before naming a number, collect the records that establish what is at risk. Download grant notices, award agreements, the current vesting schedule, and a recent account statement. If you have a cash bonus or commission in flight, retrieve the plan rules and confirm the payment date and any active-employment condition. Ask HR to confirm in writing whether notice date, last day worked, or another date controls vesting.

For each award, record grant type, number of units or options, vesting date, vesting condition, share price used for your estimate, and the consequence of departure. Add any post-termination exercise deadline for options. Do not use a dashboard’s “projected value” without recording its assumptions. The IRS notes that restricted stock units are promises rather than transferred property before settlement; its RSU discussion in Publication 5992 and Publication 525 explain why grant, vest, transfer, and sale are different moments.

For private-company equity, be more cautious. An option grant is not a cash equivalent. Record the number of vested and unvested options, strike price, exercise window, most recent fair-market-value information you are permitted to use, and any expiration or liquidity restrictions. Carta’s data and equity resources describe how private-company equity structures vary; their aggregate observations do not establish a value for your individual grant. If the award requires a costly exercise or has no near-term liquidity, say so plainly.

Include only amounts you can support. Exclude already vested shares you keep after departure, unapproved refreshers, speculative promotion grants, and hypothetical appreciation. For a cash bonus, verify whether the plan says “must be employed on payment date” and whether the payment is discretionary. For deferred compensation, consult the actual plan: the IRS guide to nonqualified deferred compensation covers arrangements with timing and tax rules that cannot safely be inferred from a compensation portal.

Separate cash certainty from equity uncertainty

A useful ask distinguishes a near-certain, near-term loss from a risky long-term estimate. For example: “I have 240 RSUs scheduled to vest on December 15, and my expected last day would be December 2. At yesterday’s close, that scheduled vest was about $48,000 before withholding. The next quarter’s vest is another 120 units, but I’m not including it in the core request because the timing and price are less certain.” This is more credible than saying, “I’m walking away from $200,000.”

Check the actual departure mechanics. An employee who resigns after a vest date but before the settlement date may have a different outcome from one whose last day is before the vest. Tax withholding, trading windows, and settlement timing may also affect net proceeds. The IRS Publication 525 rules explain that wages and stock compensation have tax reporting consequences; they do not tell you what your own award agreement permits. Confirm with your plan administrator.

There is also a difference between market value and personal value. Shares you would sell immediately are economically different from shares you intend to hold, but avoid counting hypothetical future appreciation as a guaranteed loss. The SEC’s investor materials on employee stock options describe core option risks; FINRA’s equity-compensation overview likewise helps explain why award types and liquidity matter. Use these to clarify mechanics, not to price your specific grant.

Calculate a defensible make-whole ask

Build a range rather than a magic number. Let F be the gross value of verified forfeitures inside your defined window, p the portion you believe is reasonable to replace, and C any new-hire equity already offered that truly overlaps the same period. Your first-pass bridge is p × F − C. That is not a formula for what a company owes you; it is a way to state your assumptions consistently.

Do not “gross up” casually. A $48,000 gross sign-on bonus does not put $48,000 in your bank account. Federal withholding on separately identified supplemental wages may use an optional flat 22% method under IRS Publication 15, but withholding is not the same as your final tax liability; state and local rules may apply too. If you need an after-tax target, use a tax professional’s calculation and label it as an estimate.

Benchmark the replacement offer separately. Levels.fyi’s software-engineer compensation report can help compare level, company, and geography, while the BLS Employment Cost Index tracks broad wage and benefit changes. They answer different questions. A market benchmark supports your base/equity case; a dated forfeiture schedule supports a one-time bridge. Avoid using a national average as proof that your particular sign-on should equal a specific amount.

Choose the right replacement structure

There are several ways to close a transition gap. Ask which one best matches the loss and the company’s compensation system.

  • Cash sign-on bonus: simple and liquid, but taxable as wages and often subject to repayment terms. It is best matched to a specific near-term vest or forfeited cash bonus.
  • Additional initial equity: aligns with long-term compensation, but it may vest over years and carries market or liquidity risk. Ask for the number of units or shares, grant-date valuation method, approval timing, and vesting schedule in writing.
  • Staged sign-on payments: can match multiple lost vest dates, for example a payment at start and another at month six. Clarify whether later payments require continued employment and what happens after a layoff or role elimination.
  • Guaranteed first-year bonus: may bridge a lost annual bonus, but verify whether “target” is discretionary or guaranteed and whether the plan requires employment on payout day.
  • Earlier compensation review: useful if the company cannot move the initial package, but a future review is only valuable if its date, decision-maker, and criteria are documented.

Ask about the full compensation policy, not just the offer page. BLS compensation data separates wages, supplemental pay, insurance, retirement, and paid leave; its ECEC tables show why benefits belong in the broader comparison, even though they do not value your equity. For a public employer, check how refresh grants are actually administered; an informal “we usually refresh” is not guaranteed compensation. For a private employer, ask how the share count, strike price, preferred/common distinction, dilution, and liquidity work before assigning a dollar estimate.

Company equity documents show that the same acronym can conceal very different provisions. Read the specific agreement and plan, including termination definitions, vesting, settlement, change-of-control treatment, and amendment authority. SEC-filed award agreements are useful examples of how conditions may be spelled out; they are not a substitute for your prospective employer’s documents. If a recruiter says “we can make you whole in stock,” ask for the actual grant and dates.

Negotiate the sign-on repayment clause

The bonus amount is only half the deal. Read the repayment agreement before you count the cash as a bridge. Check the service period, whether repayment is full or prorated, what event triggers repayment, how quickly it is due, and whether the trigger includes termination without cause, layoff, disability, or a material change in role or location.

A one-year cliff can create a sharp risk: leaving one day before the date might trigger repayment of the entire amount. You can ask for monthly prorating, a shorter window, no repayment after employer-initiated termination without cause, or repayment capped at the net amount received. These are negotiation requests, not statements about what law requires. State law and the contract wording matter. Have an employment attorney review a large or ambiguous clawback before signing.

Clarify payment and tax treatment. A separate sign-on payment is generally treated as supplemental wages for withholding under IRS Publication 15. If you repay compensation in a later tax year, the tax result can be complicated; IRS Publication 525’s repayment section describes potential rules, including situations involving repayments above $3,000. Do not assume the employer will reimburse taxes automatically or that withholding equals the final tax bill. Ask payroll how it handles repayment and get tax advice before accepting a large obligation.

Understand withholding and tax timing

Use gross values consistently when presenting the ask, and analyze net cash separately for your own decision. An RSU vest can create wage income when shares are delivered, with withholding handled by the employer; actual tax owed depends on your circumstances. The IRS stock-based compensation guide describes RSU treatment and timing. For more detail, IRS Publication 525 covers taxable and nontaxable income, while Publication 15 covers employer withholding on bonuses. Those are different questions, and neither makes your employer’s withholding the final tax calculation.

Keep a record of dates, award values, and withholding statements. On RSU settlement, basis and sale reporting can require reconciliation across W-2 and broker documents; ask a tax professional if the forms do not line up. The IRS’s tax topic index for stock options covers option-related basics but does not resolve every restricted-stock or nonqualified-deferred-compensation situation. Private-company plans can add exercise and liquidity deadlines, so obtain advice before assuming an option is worth its headline spread.

One important practical distinction: the withholding rate on a bonus is a payroll mechanism. The 22% optional flat method described in IRS Publication 15 is not a promise that your marginal tax rate is 22%, nor does it cap your eventual tax. Build your personal cash runway using estimated net proceeds, but make your negotiation request using documented gross compensation so both sides are discussing comparable figures.

Make the case without sounding transactional

Lead with enthusiasm and a specific close. Then state the facts in three sentences: what you are giving up, how you calculated it, and the structure that would let you accept. Keep the proof ready, but do not attach private equity statements before the employer needs them.

A concise make-whole request“I need you to match my current total compensation. I’m losing a lot if I leave.”“I’m excited about the scope and would be ready to sign if we can address the December vest I would forfeit. My award statement shows 240 RSUs scheduled for December 15; at the current reference price that is roughly $48,000 gross, before any future price change. Could we add a $48,000 sign-on bonus, or discuss a staged cash and equity bridge? I’d also like the repayment period prorated and excluded if the company ends my employment without cause.”

Practice the offer conversation before you have to make it live. Build a concise, evidence-based counter and prepare responses to recruiter pushback.

Practice your offer negotiation

Compare the whole offer and decide

After negotiation, compare the offers over a consistent horizon—usually the first year and the following two or three years. Separate guaranteed base and sign-on from target bonus, initial equity, refreshers, and benefits. Show equity under at least three price scenarios, and mark which components are documented versus discretionary. For private stock, do not treat the latest preferred-round price as the value of common shares you could sell today.

Assess the new opportunity on its merits too: level, technical mandate, manager, team health, expected workload, location, learning, and stability. A make-whole payment can close a financial timing gap; it cannot repair a role that is poorly scoped. Broader compensation benchmarks, such as the BLS compensation cost series and Levels.fyi’s engineer report, give context but cannot tell you which job is right.

Finally, obtain a written offer and every incorporated plan document before resigning. Make sure the sign-on amount, payment date, repayment schedule, exceptions, equity grant, vest dates, level, and any review commitment appear in the governing paperwork. An email may help document discussions, but it may not override an agreement. Where the language is consequential or unclear, have a qualified attorney review it.

A practical checklist

  1. Verify: Gather award agreements, vest schedules, bonus plans, and written termination-date rules.
  2. Classify: Separate earned cash, near-term forfeitures, contingent awards, and speculative future value.
  3. Price: Use a dated share-price reference, calculate gross values, and show a conservative range.
  4. Match: Ask for cash, staged payments, additional equity, or another documented mechanism that fits the timing.
  5. Protect: Review clawback triggers, proration, employer termination, repayment deadline, and tax handling.
  6. Compare: Model first-year and multi-year compensation, benefits, risk, level, and role quality.
  7. Confirm: Do not resign until the complete offer and applicable plans are in writing.

The strongest make-whole negotiation is neither an emotional plea nor a demand to reimburse an imagined stock price. It is a short, sourced explanation of a real transition cost, a reasonable range, and a few structures the company can approve. Senior and staff engineers do this well when they make uncertainty visible, preserve a collaborative tone, and judge the written terms as carefully as the headline number.

Make-whole offer: key takeaways
  • Anchor the request to dated, documented forfeitures, not the portal’s speculative total.
  • Keep gross compensation separate from personal after-tax planning.
  • Match the bridge structure to the loss timing and risk.
  • Negotiate sign-on clawbacks as carefully as the amount itself.
  • Compare the full written offer before giving notice.

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