The limitation of action for bank loans is 2 years and the longest is 20 years.

According to the provisions of the General Principles of Civil Law of People's Republic of China (PRC):

Article 135 Limitation of ordinary actions

The limitation period for requesting protection of civil rights from the people is two years, unless otherwise stipulated by law.

Article 136 Short-term limitation of action

The following limitation period is one year:

(1) Requesting compensation for personal injury;

(two) the sale of substandard goods has not been declared;

(3) delaying or refusing to pay the rent; (4) Loss of or damage to the property in escrow.

Article 137 Long-term limitation of action

The limitation period of action shall be counted from the time when you know or should know that your rights have been infringed. However, if more than 20 years have passed since the date of violation of rights, the people will not be protected. Under special circumstances, the people may extend the limitation of action.

Extended data:

According to the Guarantee Law of People's Republic of China (PRC):

Article 25 If the guarantor of a general guarantee and the creditor have not agreed on a guarantee period, the guarantee period shall be six months from the date when the performance period of the principal debt expires.

If the creditor fails to bring a lawsuit against the debtor or apply for arbitration during the guarantee period stipulated in the contract and the guarantee period stipulated in the preceding paragraph, the guarantor shall be exempted from the guarantee liability; If the creditor has filed a lawsuit or applied for arbitration, the provisions on interruption of limitation of action shall apply during the guarantee period.

Article 26 If the guarantor of joint and several liability guarantee and the creditor have not agreed on the guarantee period, the creditor has the right to ask the guarantor to assume the guarantee responsibility within six months from the date of expiration of the independent debt performance period.

If the creditor fails to require the guarantor to assume the guarantee responsibility during the guarantee period agreed in the contract and the guarantee period stipulated in the preceding paragraph, the guarantor shall be exempted from the guarantee responsibility.

Article 27 A guarantor shall provide a guarantee for continuous creditor's rights in accordance with the provisions of Article 14 of this Law. If the guarantee period is not stipulated, the guarantor may notify the creditor in writing to terminate the guarantee contract at any time, but the guarantor shall be liable for the creditor's rights that occurred before notifying the creditor.

Article 28 If the same creditor's right is secured by two things, the guarantor shall be liable for the creditor's right other than the thing.

If the creditor waives the property guarantee, the guarantor shall be exempted from the guarantee liability within the scope of the creditor's waiver of rights.

Article 29 If a branch of an enterprise as a legal person enters into a guarantee contract with a creditor without the written authorization of the legal person or beyond the scope of authorization, the contract or the part beyond the scope of authorization shall be invalid. If the creditor and the enterprise as a legal person are at fault, they shall bear corresponding civil liabilities respectively according to their faults; If the creditor is not at fault, the enterprise as a legal person shall bear civil liability.