Coming forward voluntarily after an incident: Self‑surrender can cut a sentence by up to 40%, and the “statute of limitations” defense simply does not exist

There is no cost at all. You can walk into a police station, stay on the scene and call the authorities, then tell them exactly what happened. The hard part is resisting the urge to “wait and see — maybe no one will notice.”

Article 67 of the Criminal Law states that anyone who voluntarily surrenders and truthfully confesses their crime receives a lighter or reduced sentence; those guilty of minor offenses may be exempted entirely. Even without surrender, a sincere confession can still earn a penalty cut; if it prevents especially grave consequences, the reduction can be even greater. Official sentencing guidelines set clear percentage ranges: voluntary surrender can lower the baseline sentence by up to 40% (or more for minor crimes), while a simple confession brings a reduction of up to 20%. Additional factors such as admitting to related, un‑discovered crimes or averting serious harm can add another 10‑50% cut. Plea agreements also grant up to 30% relief, and when combined with surrender, restitution, compensation and other mitigating circumstances the total reduction may exceed 60% (or even lead to full exemption for minor offenses). Conversely, the statute of limitations is divided into four tiers — 5, 10, 15 and 20 years — based on the maximum possible penalty (Article 87). However, Article 88 explicitly states that once an investigation or prosecution is underway, any attempt to evade it renders the time spent in hiding irrelevant; the clock never stops.

全国人大. 中华人民共和国刑法（经刑法修正案十一修正的整合文本）第六十七、八十七、八十八条. https://flk.npc.gov.cn/detail?id=ff808181796a636a0179822a19640c92；最高人民法院、最高人民检察院 (2021). 关于常见犯罪的量刑指导意见（试行）（法发〔2021〕21 号，2021 年 7 月 1 日施行）三（六）（七）（十四）. 甘肃省张掖市人民检察院转载全文. http://www.zhangye.jcy.gov.cn/info/1039/2086.htm；最高人民法院 (2010). 关于处理自首和立功若干具体问题的意见（法发〔2010〕60 号）一. 最高人民法院公报. http://gongbao.court.gov.cn/Details/f3089058d37e11cd16d801530934ae.html

The primary beneficiary of this provision is the offender himself. Self‑surrender is a mitigating factor, not a blanket pardon; the exact reduction is left to judicial discretion, and stricter limits apply to violent and drug‑related crimes. Traffic‑accident cases follow a separate rule: staying at the scene, rendering aid and reporting the incident counts as voluntary surrender, yet because these actions are legally required, the permissible reduction is limited. Even if a driver flees first and later turns himself in, he still qualifies as a surrenderer; the baseline sentence used for calculation is the higher statutory maximum, and the subsequent reduction follows the same percentages described above (see Section 1 for proper post‑accident conduct: stop, help, call police). Consulting a lawyer does not conflict with a truthful confession; the attorney’s role is to verify that the written statement accurately reflects the facts, not to help fabricate a story.