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Vasectomy vs Withdrawal

A side-by-side comparison of two birth control methods — efficacy, cost, how they work, and who shouldn't use them.

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Side-by-side comparison

  • Vasectomy A permanent outpatient procedure that blocks the vas deferens so sperm cannot enter the semen.
  • Withdrawal The man withdraws his penis from the vagina before ejaculation to reduce the chance of sperm reaching the egg.
Method
Vasectomy A permanent outpatient procedure that blocks the vas deferens so sperm cannot enter the semen.
Withdrawal The man withdraws his penis from the vagina before ejaculation to reduce the chance of sperm reaching the egg.
EfficacyVasectomy 99.85% typical use

Most effective: over 99 out of 100 people successfully prevent pregnancy per year.

Withdrawal 80% typical use

Least effective: under 90 out of 100 people successfully prevent pregnancy per year.

CostVasectomy $0–$1,000 Insurance: VariesWithdrawal $0
DurationVasectomy PermanentWithdrawal Per act
ReversibilityVasectomy PermanentWithdrawal Reversible
STI protectionVasectomy NoWithdrawal No
How it worksVasectomy

A clinician cuts, seals, or blocks the vas deferens so sperm cannot mix with semen during ejaculation. The body absorbs the sperm, and the semen remains normal in appearance and volume.

Withdrawal

The man withdraws his penis from the vagina before ejaculation to keep semen out of the vagina. Pre-ejaculate may contain some sperm. A 2024 pilot study found sperm in about 13% of pre-ejaculate samples, though roughly 75% of participants had no sperm in any sample.

PrescriptionVasectomy Required In-Person ProcedureWithdrawal Not required Self-Directed
Side effectsVasectomy
  • Mild pain or swelling for a few days
  • Bruising or bleeding at the site
  • Sperm granuloma (swelling from leaked sperm that usually goes away on its own)
  • Chronic post-vasectomy pain syndrome (5% in a 2020 meta-analysis)
Withdrawal None reported
Who shouldn't use thisVasectomy
  • Uncertainty about future fertility desires
  • Known allergy or hypersensitivity to materials used in the procedure
Withdrawal
  • Partner unable to withdraw consistently before ejaculation
  • Need for highly effective contraception

Key differences

With typical use, 0.2 in 100 people using Vasectomy get pregnant in a year, vs 20 in 100 with Withdrawal (most effective vs least effective). How long it lasts: Vasectomy, permanent; Withdrawal, per act. Vasectomy: permanent. Withdrawal: reversible. A prescription is needed for Vasectomy, not for Withdrawal. Vasectomy: costs $0–$1,000. Withdrawal: costs $0.