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| Permian Basin Royalty Trust Financial Statements Condensed Statements of Assets , Liabilities and Trust Corpus March 31 , 2021 ( Unaudited ) December 31 , 2020 $ 1,637,532 $ 1,725,449 Assets Cash and short - term investments . Net overriding royalty interests in producing oil and gas properties ( net of accumulated amortization of $ 10,602,161 and $ 10,592,340 at March 31 , 2021 and December 31 , 2020 , respectively ) . TOTAL ASSETS . Liabilities and Trust Corpus Distribution payable to Unit Holders . Commitments and reserves for contingencies . Trust corpus 46,608,796 Units of beneficial interest authorized and outstanding .. TOTAL LIABILITIES AND TRUST CORPUS 373,055 382,876 $ 2,108,325 $ 2,010,587 $ 537,532 $ 625,449 1,100,000 1,100,000 373,055 $ 2,010,587 382,776 $ 2,108,325 Condensed Statements of Distributable Income ( Unaudited ) Three Months Ended March 31 , 2021 Royalty income Interest income General and administrative expenditures Distributable income .. Distributable income per Unit ( 46,608,796 Units ) . 2020 $ 2,124,157 1,313 $ 6,254,509 4,361 2,125,470 ( 285,740 ) 6,258,870 ( 328,863 ) $ 1,839,730 $ 5,930,007 $ .04 $ .13 Condensed Statements of Changes in Trust Corpus ( Unaudited ) Trust corpus , beginning of period . Amortization of net overriding royalty interests . Distributable income .. Distributions declared Total Trust Corpus , end of period .. Distributions per Unit . Three Months Ended March 31 , 2021 2020 $ 382,876 $ 424,507 ( 9,821 ) ( 13,078 ) 1,839,730 5,930,007 ( 1,837,730 ) ( 5,930,007 ) $ 373,055 $ 411,429 $ .04 $ 13 Permian Basin Royalty Trust st Quarter Report 2021