The LTA's income has fallen by about 40%, or £30m, in 2020 due to Covid-19.
British tennis' governing body says it is planning for a "challenging financial outlook" and expects a severe impact on its finances if Wimbledon is held behind closed doors next year.
In the short term, much will depend on the size of the annual payment the All England Club (AELTC) makes to the LTA.
Wimbledon was cancelled this year so that will be determined by the sum the AELTC's pandemic insurance pays out.
BBC Sport understands those negotiations are now close to a conclusion.