Discount Rate
A percentage reduction applied to the next round's share price when a SAFE or note converts, rewarding early investors.
A discount rate gives SAFE or note holders the right to convert at a lower price per share than new investors pay in the priced round that triggers conversion — commonly 10-20%, per Y Combinator. It compensates early investors for taking risk before the company had a formal valuation.
When a SAFE has both a valuation cap and a discount, it converts at whichever produces the lower price per share (more favorable to the investor), so the discount mainly matters when the actual round prices close to or below the cap.
In practice the valuation cap decides the conversion price far more often than the discount does, because a cap set well below the eventual round price produces a much lower effective price than a percentage haircut. The discount's real job is protecting the investor when the round prices low — at or near the cap, or when there's no cap at all.
On Y Combinator's forms, the discount SAFE's 'Discount Rate' field is the percentage of the round price the investor pays, which is why YC tells founders who want an uncapped SAFE with no discount to use the discount form and set the Discount Rate to 100%. Read that blank carefully — entering the discount itself instead of 100 minus the discount is an expensive typo.
Don't confuse it with the corporate-finance discount rate used to bring future cash flows to present value in a DCF model. In SAFE and note documents, 'discount rate' means the conversion discount.
Discounted conversion price = round price per share x (1 - discount rate)A SAFE with a 20% discount and no binding cap converts when the Series A prices shares at $2.00. The SAFE holder converts at $1.60 per share, getting 25% more shares than a new Series A investor for the same dollar amount.
A discount alone (no cap) is a weaker term for early investors than a cap, since it only helps if the round prices low — most institutional seed investors will insist on a cap, using the discount as a secondary sweetener.
Do SAFEs need both a cap and a discount?
No — many SAFEs use only a cap, since it's a stronger investor protection; a discount-only SAFE is less common and generally seen as less favorable to the investor.
What's a typical discount on a SAFE or convertible note?
Y Combinator says discounts are commonly 10-20%. On a 20% discount SAFE, investors convert at a price 20% below what new investors pay in the priced round.
Does the discount stack on top of the valuation cap?
No. The investor converts at whichever calculation gives the lower price — never both applied together. If the cap already produces a price below the discounted round price, the discount does nothing.
When does the discount beat the cap?
When the round prices low. A SAFE with a $5M cap and a 20% discount converts at the cap if the Series A prices at $20M pre-money (versus $16M with the discount), but if the round prices at $6M pre-money, the discount's effective $4.8M beats the $5M cap.
Sources
Related terms
Run the numbers yourself: dilution, SAFE conversion, and fund-returner calculators.