A SAFE term sheet sets out the handful of economic and structural terms that govern a Simple Agreement for Future Equity: the valuation cap or discount, whether it’s post-money or pre-money, any most favored nation or pro rata rights, and the events that convert the investor’s cash into stock. The document itself is short, and most negotiations turn on a single number, but the terms around that number decide how much of the company the investor ends up owning and what protections travel with the check.
The One Number You Actually Negotiate
Y Combinator’s own guidance is blunt about this: startups and investors usually only need to negotiate the valuation cap.1Y Combinator. YC Safe Financing Documents The cap sets a ceiling on the price at which the SAFE converts into shares. If the company later raises a priced round at a valuation above the cap, the SAFE investor’s shares are calculated using the lower cap figure, giving them a larger ownership stake as a reward for investing early. If the priced round comes in at or below the cap, the cap is irrelevant and the investor converts at the round price.
Some SAFEs skip the cap and use a discount rate instead: a percentage off the share price paid by investors in the next priced round. A 20% discount means the SAFE holder pays 80 cents for every dollar the new investors pay. Y Combinator publishes a separate template for discount-only SAFEs, and the standard versions do not combine a cap with a discount in the same agreement.1Y Combinator. YC Safe Financing Documents Cap-based deals dominate in practice; discount-only SAFEs surface mainly when the parties can’t agree on a cap number.
There’s a third path for the earliest checks, before either side has enough data to set a sensible cap. The uncapped MFN SAFE has no valuation cap and no discount.1Y Combinator. YC Safe Financing Documents Its most favored nation clause lets the holder amend their SAFE to match the terms of any future SAFE the company issues on better terms. It protects an early investor from being disadvantaged by a later one who negotiated harder.
Post-Money vs. Pre-Money
This distinction shapes the ownership math more than most founders realize. In the original pre-money SAFE, the investor’s ownership percentage couldn’t be calculated until the priced round closed, because the valuation excluded the new money coming in. That ambiguity frustrated both sides. In 2018, Y Combinator released the post-money SAFE, which is now the industry standard.2Y Combinator. Primer for post-money safe
The post-money version calculates ownership based on the valuation after all SAFE investments are included, so an investor knows their approximate ownership percentage the moment they sign. Invest $1 million on a $10 million post-money cap and you own roughly 10%. That clarity is the whole point of the update. Founders should model the dilution carefully before stacking multiple post-money SAFEs, because the arithmetic bakes each investor’s percentage in early and compounds against the common stock.
Pro Rata and Side Letter Add-Ons
The standard SAFE is deliberately lean. It does not include information rights, board observer seats, expense reimbursement, or pro rata rights. When an investor wants any of those extras, they go in a separate side letter that sits alongside the SAFE.
Pro rata rights let the investor put more money into a future round to maintain their ownership percentage. They aren’t baked into the SAFE itself; Y Combinator publishes a separate pro rata side letter for parties that want the protection.1Y Combinator. YC Safe Financing Documents For investors writing larger checks the right matters a great deal, because it prevents dilution in a hot follow-on round where the company might otherwise decline their participation. Common side letter provisions include:
- Information rights giving periodic access to financial statements or operational updates.
- Board observer rights allowing a seat at board meetings as a non-voting observer.
- Pro rata rights documented through Y Combinator’s published side letter template.
- Expense reimbursement covering the investor’s legal costs for the transaction.
- MFN protection updating the investor’s terms automatically if later SAFEs offer better ones.
Grant these narrowly. If every angel gets information rights and a board observer seat, investor management starts eating into building time. Reserve them for lead investors writing meaningful checks and keep the standard SAFE clean for smaller participants.
What Triggers Conversion
A SAFE sits on the cap table as a contractual right until a specific event converts it into actual stock. There’s no maturity date and no interest accruing.3Y Combinator. Announcing the Safe, a Replacement for Convertible Notes Three events end the wait.
Equity financing. The most common trigger. When the company sells preferred stock at a set price per share, the SAFE converts automatically at whichever price is lower for the holder: the valuation cap price or the discounted round price. The investor receives preferred stock with rights comparable to the new round investors.
Liquidity event. A change of control such as an acquisition, or an IPO, also triggers conversion. In a liquidity event the SAFE holder typically chooses between a cash payment equal to the purchase amount or converting into shares based on the valuation cap.4U.S. Securities and Exchange Commission. YayYo, Inc. SAFE (Simple Agreement for Future Equity) The conversion option is where the valuation cap earns its keep for early investors if the company sells for well above the cap.
Dissolution. If the company shuts down and liquidates, creditors and outstanding debts get paid first, SAFE holders and preferred stockholders next, and common stockholders last.5U.S. Securities and Exchange Commission. Innovega Inc. SAFE Most dissolutions don’t leave enough to reach the SAFE holders, so the priority matters more in theory than in practice.
Fields You Fill In
The standard SAFE is short, but every field needs to be filled in correctly. A wrong name or misidentified entity type creates headaches during a future priced round or acquisition when lawyers comb through the data room.
- Company legal name: the exact name filed with the secretary of state at incorporation, not a DBA or brand name.
- State of incorporation: this determines the governing law clause. Most venture-backed startups are Delaware corporations; confirm yours.
- Investor legal name: the full name of the individual or investment entity (LLC, trust, or fund).
- Purchase amount: the dollar figure the investor is contributing.
- Valuation cap or discount rate: whichever economic term the parties negotiated.
- Effective date: typically the date both parties sign and the funds are committed.
- Authorized signatory: if the investor is an entity, the name and title of the person signing on its behalf.
Y Combinator publishes free, downloadable templates with bracketed fields for these inputs.1Y Combinator. YC Safe Financing Documents Using the standard template without modifications keeps legal costs low, though Y Combinator itself recommends consulting a lawyer before using the forms.
Securities Law You Can’t Skip
A SAFE is a security under federal law. Issuing one without complying with securities regulations can expose both the company and its founders to serious liability. This is where founders most often make mistakes.
Regulation D Exemptions
Most startups issue SAFEs under Regulation D of the Securities Act of 1933, which exempts certain private offerings from full SEC registration. Rule 506(b) allows unlimited capital from accredited investors without general solicitation, meaning no public advertising of the offering. Rule 506(c) permits general solicitation and advertising, but every purchaser must be accredited and the company must take reasonable steps to verify that status.6U.S. Securities and Exchange Commission. General solicitation – Rule 506(c) Most SAFE rounds happen through warm introductions, so 506(b) is the more common path.
Accredited Investor Requirements
Under either 506 exemption, investors generally need to be accredited. An individual qualifies with net worth exceeding $1 million (excluding primary residence) or annual income above $200,000 individually ($300,000 jointly with a spouse or partner) for the past two years, with a reasonable expectation of the same in the current year.7U.S. Securities and Exchange Commission. Accredited Investors Individuals holding a Series 7, Series 65, or Series 82 license also qualify, as do directors and executive officers of the issuing company.
Rule 506(c) requires more than a checkbox. You must take reasonable verification steps, which can include reviewing tax returns, bank statements, or getting written confirmation from a registered broker-dealer, attorney, or CPA that they’ve verified the investor within the last three months. Self-certification alone is not enough.8U.S. Securities and Exchange Commission. Assessing Accredited Investors under Regulation D
Form D Filing
After the first sale of securities in the offering, the company must file a Form D notice with the SEC within 15 days. The “first sale” date is when the first investor becomes irrevocably committed, not when the wire arrives. If the deadline falls on a weekend or holiday, it rolls to the next business day. Filing is done electronically through EDGAR and there is no filing fee.9U.S. Securities and Exchange Commission. Filing a Form D Notice
State Notice Filings
Federal preemption under Rule 506 means states cannot require you to register the offering, but most still require a notice filing and charge a fee. You file in each state where a purchaser resides. Fees vary widely and can range from under $100 to nearly $2,000. Skipping these filings can prompt a state securities regulator to suspend the offering or create complications in your next round.
Board Approval and Execution Housekeeping
Before you sign anything, the board of directors must authorize the SAFE issuance. This step is easy to overlook, especially at a two-person startup where the founders are the entire board, but skipping it creates a governance gap that surfaces during Series A due diligence. The board should approve the form of the SAFE, the terms, and the total amount the company plans to raise, documented as a board consent or minutes and stored with the corporate records. If the board has already taken steps to advance the financing before formally approving it, the resolution should ratify those prior actions too.
Execution itself is straightforward. Both parties sign, usually through an electronic signature platform, and the investor wires the purchase amount to the company’s business bank account. Send a fully executed copy back with a confirmation of receipt, update the cap table to reflect the new SAFE obligation, and store the signed documents in a digital data room. When you raise your Series A, the lead investor’s lawyers will request every SAFE you’ve issued.
Tax Treatment: Known and Unknown
The tax treatment of SAFEs is one of the murkier areas of startup finance, largely because the IRS has not issued definitive guidance on how to classify them. A SAFE is generally treated as a prepaid equity instrument rather than debt, so no interest income accrues to the investor and no interest deductions flow to the company. At issuance, there are typically no immediate tax consequences for either party.
Conversion into equity during a priced round is generally not a taxable event. The investor’s cost basis in the shares equals the original purchase amount, and the holding period for capital gains purposes arguably begins at conversion. That “arguably” matters. There is a genuine legal question about whether the holding period starts when the SAFE is purchased or when it converts, and the IRS has not resolved it. The answer has real consequences for anyone hoping to qualify for the Section 1202 exclusion on qualified small business stock, which requires a five-year holding period to exclude up to 100% of the gain from federal income tax.
If a SAFE is granted as compensation for services rather than purchased for cash, Section 83 of the Internal Revenue Code may apply, requiring the recipient to recognize income based on the fair market value of the instrument. That scenario is uncommon but worth flagging for advisors or early employees receiving SAFEs as part of a compensation package. Given the uncertainty, both founders and investors should work with a tax advisor who understands startup instruments before assuming any particular treatment.
When a SAFE Isn’t the Right Tool
If an investor wants the protections of debt, a SAFE won’t deliver them. Convertible notes accrue interest (typically 4–8% per year) and carry a maturity date, usually 18–24 months out, at which point the company either converts the note or repays it. A SAFE has neither. It sits on the cap table indefinitely until a triggering event occurs, and the investor has no repayment right if that event never comes. That trade-off is the whole design: simplicity and speed for the founder, patience and risk for the investor.