To prevent misuse of proposed electoral bonds, the government is likely to cap the validity at 15 days within which such bonds -- bearer in nature -- have to be redeemed by political parties.
According to official sources, the guidelines for electoral bonds, announced in Budget 2017-18, are almost ready and some fine-tuning is being done by the finance ministry.
Such bonds would be bearer in nature so that those having it can encash through only one notified account within stipulated time, the sources said.
"Each party will have one notified bank account. All bonds are to be deposited in that particular account. It is a paper currency and needs to be encashed in 15 days, otherwise it loses validity," a senior government official said.
The short duration of bonds will ensure these cannot be misused and the objective of reducing the incidence of black money in political funding is achieved, the official added.
The norms regarding electoral bonds could be out soon and some other features of such instruments would be issued by select designated public sector banks.
As per the electoral bond mechanism, the proposed bonds will resemble a promissory note and not an interest-paying debt instrument.
The Electoral Bond scheme will ensure complete anonymity of the donor, sources said, adding that these could be issued in denominations of Rs 1,000 and Rs 5,000.
Finance Minister Arun Jaitley had proposed issuance of electoral bonds in Budget 2017-18.
"An effort, therefore, requires to be made to cleanse the system of political funding in India. Donors have also expressed reluctance in donating by cheque or other transparent methods as it would disclose their identity and entail adverse consequences," he had said in the Budget speech.